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								      < h3 > Navigation< / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
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								          < a  href = "../index.html" > 3.7.0a0 Documentation< / a >  » 
							 
						 
					
						
							
								
									
										
										
										
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								< span  id = "id1" > < / span > < h1 > 25.5. IDLE< a  class = "headerlink"  href = "#idle"  title = "Permalink to this headline" > ¶< / a > < / h1 > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > < strong > Source code:< / strong >  < a  class = "reference external"  href = "https://github.com/python/cpython/tree/master/Lib/idlelib/" > Lib/idlelib/< / a > < / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< hr  class = "docutils"  id = "index-0"  / > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > IDLE is Python’ s Integrated Development and Learning Environment.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > IDLE has the following features:< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< ul  class = "simple" > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > coded in 100% pure Python, using the < a  class = "reference internal"  href = "tkinter.html#module-tkinter"  title = "tkinter: Interface to Tcl/Tk for graphical user interfaces" > < code  class = "xref py py-mod docutils literal" > < span  class = "pre" > tkinter< / span > < / code > < / a >  GUI toolkit< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > cross-platform: works mostly the same on Windows, Unix, and Mac OS X< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > Python shell window (interactive interpreter) with colorizing
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								of code input, output, and error messages< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > multi-window text editor with multiple undo, Python colorizing,
							 
						 
					
						
							
								
									
										
										
										
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								smart indent, call tips, auto completion, and other features< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > search within any window, replace within editor windows, and search
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								through multiple files (grep)< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > debugger with persistent breakpoints, stepping, and viewing
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								of global and local namespaces< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > configuration, browsers, and other dialogs< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "menus" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h2 > 25.5.1. Menus< a  class = "headerlink"  href = "#menus"  title = "Permalink to this headline" > ¶< / a > < / h2 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > IDLE has two main window types, the Shell window and the Editor window.  It is
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								possible to have multiple editor windows simultaneously.  Output windows, such
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								as used for Edit / Find in Files, are a subtype of edit window.  They currently
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								have the same top menu as Editor windows but a different default title and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								context menu.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > IDLE’ s menus dynamically change based on which window is currently selected.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Each menu documented below indicates which window type it is associated with.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "file-menu-shell-and-editor" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.1. File menu (Shell and Editor)< a  class = "headerlink"  href = "#file-menu-shell-and-editor"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > New File< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Create a new file editing window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Open...< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open an existing file with an Open dialog.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Recent Files< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open a list of recent files.  Click one to open it.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Open Module...< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open an existing module (searches sys.path).< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils"  id = "index-1" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Class Browser< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Show functions, classes, and methods in the current Editor file in a
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								tree structure.  In the shell, open a module first.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Path Browser< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Show sys.path directories, modules, functions, classes and methods in a
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								tree structure.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Save< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Save the current window to the associated file, if there is one.  Windows
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								that have been changed since being opened or last saved have a * before
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								and after the window title.  If there is no associated file,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								do Save As instead.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Save As...< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Save the current window with a Save As dialog.  The file saved becomes the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								new associated file for the window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Save Copy As...< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Save the current window to different file without changing the associated
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								file.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Print Window< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Print the current window to the default printer.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Close< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Close the current window (ask to save if unsaved).< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Exit< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Close all windows and quit IDLE (ask to save unsaved windows).< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "edit-menu-shell-and-editor" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.2. Edit menu (Shell and Editor)< a  class = "headerlink"  href = "#edit-menu-shell-and-editor"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Undo< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Undo the last change to the current window.  A maximum of 1000 changes may
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								be undone.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Redo< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Redo the last undone change to the current window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Cut< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Copy selection into the system-wide clipboard; then delete the selection.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Copy< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Copy selection into the system-wide clipboard.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Paste< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Insert contents of the system-wide clipboard into the current window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > The clipboard functions are also available in context menus.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Select All< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Select the entire contents of the current window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Find...< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open a search dialog with many options< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Find Again< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Repeat the last search, if there is one.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Find Selection< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Search for the currently selected string, if there is one.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Find in Files...< / dt > 
							 
						 
					
						
							
								
									
										
										
										
											2016-05-02 18:30:02 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< dd > Open a file search dialog.  Put results in a new output window.< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< dt > Replace...< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open a search-and-replace dialog.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Go to Line< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Move cursor to the line number requested and make that line visible.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Show Completions< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open a scrollable list allowing selection of keywords and attributes. See
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Completions in the Tips sections below.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Expand Word< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Expand a prefix you have typed to match a full word in the same window;
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								repeat to get a different expansion.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Show call tip< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > After an unclosed parenthesis for a function, open a small window with
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								function parameter hints.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Show surrounding parens< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Highlight the surrounding parenthesis.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "format-menu-editor-window-only" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.3. Format menu (Editor window only)< a  class = "headerlink"  href = "#format-menu-editor-window-only"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Indent Region< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Shift selected lines right by the indent width (default 4 spaces).< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Dedent Region< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Shift selected lines left by the indent width (default 4 spaces).< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Comment Out Region< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Insert ## in front of selected lines.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Uncomment Region< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Remove leading # or ## from selected lines.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Tabify Region< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Turn < em > leading< / em >  stretches of spaces into tabs. (Note: We recommend using
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								4 space blocks to indent Python code.)< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Untabify Region< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Turn < em > all< / em >  tabs into the correct number of spaces.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Toggle Tabs< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open a dialog to switch between indenting with spaces and tabs.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > New Indent Width< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open a dialog to change indent width. The accepted default by the Python
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								community is 4 spaces.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Format Paragraph< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Reformat the current blank-line-delimited paragraph in comment block or
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								multiline string or selected line in a string.  All lines in the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								paragraph will be formatted to less than N columns, where N defaults to 72.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Strip trailing whitespace< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Remove any space characters after the last non-space character of a line.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "run-menu-editor-window-only" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< span  id = "index-2" > < / span > < h3 > 25.5.1.4. Run menu (Editor window only)< a  class = "headerlink"  href = "#run-menu-editor-window-only"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Python Shell< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open or wake up the Python Shell window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Check Module< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Check the syntax of the module currently open in the Editor window. If the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								module has not been saved IDLE will either prompt the user to save or
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								autosave, as selected in the General tab of the Idle Settings dialog.  If
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								there is a syntax error, the approximate location is indicated in the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Editor window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Run Module< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Do Check Module (above).  If no error, restart the shell to clean the
							 
						 
					
						
							
								
									
										
										
										
											2015-09-24 03:09:43 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								environment, then execute the module.  Output is displayed in the Shell
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								window.  Note that output requires use of < code  class = "docutils literal" > < span  class = "pre" > print< / span > < / code >  or < code  class = "docutils literal" > < span  class = "pre" > write< / span > < / code > .
							 
						 
					
						
							
								
									
										
										
										
											2015-09-24 03:09:43 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								When execution is complete, the Shell retains focus and displays a prompt.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								At this point, one may interactively explore the result of execution.
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								This is similar to executing a file with < code  class = "docutils literal" > < span  class = "pre" > python< / span >  < span  class = "pre" > -i< / span >  < span  class = "pre" > file< / span > < / code >  at a command
							 
						 
					
						
							
								
									
										
										
										
											2015-09-24 03:09:43 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								line.< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "shell-menu-shell-window-only" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.5. Shell menu (Shell window only)< a  class = "headerlink"  href = "#shell-menu-shell-window-only"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > View Last Restart< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Scroll the shell window to the last Shell restart.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Restart Shell< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Restart the shell to clean the environment.< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2016-09-12 01:50:03 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< dt > Interrupt Execution< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Stop a running program.< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "debug-menu-shell-window-only" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.6. Debug menu (Shell window only)< a  class = "headerlink"  href = "#debug-menu-shell-window-only"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Go to File/Line< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Look on the current line. with the cursor, and the line above for a filename
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								and line number.  If found, open the file if not already open, and show the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								line.  Use this to view source lines referenced in an exception traceback
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								and lines found by Find in Files. Also available in the context menu of
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the Shell window and Output windows.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils"  id = "index-3" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Debugger (toggle)< / dt > 
							 
						 
					
						
							
								
									
										
										
										
											2017-06-13 21:32:16 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< dd > When activated, code entered in the Shell or run from an Editor will run
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								under the debugger.  In the Editor, breakpoints can be set with the context
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								menu.  This feature is still incomplete and somewhat experimental.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Stack Viewer< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Show the stack traceback of the last exception in a tree widget, with
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								access to locals and globals.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Auto-open Stack Viewer< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Toggle automatically opening the stack viewer on an unhandled exception.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "options-menu-shell-and-editor" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.7. Options menu (Shell and Editor)< a  class = "headerlink"  href = "#options-menu-shell-and-editor"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Configure IDLE< / dt > 
							 
						 
					
						
							
								
									
										
										
										
											2015-10-13 22:03:51 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< dd > < p  class = "first" > Open a configuration dialog and change preferences for the following:
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								fonts, indentation, keybindings, text color themes, startup windows and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								size, additional help sources, and extensions (see below).  On OS X,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								open the configuration dialog by selecting Preferences in the application
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								menu.  To use a new built-in color theme (IDLE Dark) with older IDLEs,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								save it as a new custom theme.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p  class = "last" > Non-default user settings are saved in a .idlerc directory in the user’ s
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								home directory.  Problems caused by bad user configuration files are solved
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								by editing or deleting one or more of the files in .idlerc.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dd > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< dt > Code Context (toggle)(Editor Window only)< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Open a pane at the top of the edit window which shows the block context
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								of the code which has scrolled above the top of the window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "window-menu-shell-and-editor" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.8. Window menu (Shell and Editor)< a  class = "headerlink"  href = "#window-menu-shell-and-editor"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Zoom Height< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Toggles the window between normal size and maximum height. The initial size
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								defaults to 40 lines by 80 chars unless changed on the General tab of the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Configure IDLE dialog.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > The rest of this menu lists the names of all open windows; select one to bring
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								it to the foreground (deiconifying it if necessary).< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "help-menu-shell-and-editor" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.1.9. Help menu (Shell and Editor)< a  class = "headerlink"  href = "#help-menu-shell-and-editor"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > About IDLE< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Display version, copyright, license, credits, and more.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > IDLE Help< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Display a help file for IDLE detailing the menu options, basic editing and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								navigation, and other tips.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Python Docs< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Access local Python documentation, if installed, or start a web browser
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								and open docs.python.org showing the latest Python documentation.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Turtle Demo< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Run the turtledemo module with example python code and turtle drawings.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Additional help sources may be added here with the Configure IDLE dialog under
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the General tab.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "context-menus" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< span  id = "index-4" > < / span > < h3 > 25.5.1.10. Context Menus< a  class = "headerlink"  href = "#context-menus"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Open a context menu by right-clicking in a window (Control-click on OS X).
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Context menus have the standard clipboard functions also on the Edit menu.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Cut< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Copy selection into the system-wide clipboard; then delete the selection.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Copy< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Copy selection into the system-wide clipboard.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Paste< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Insert contents of the system-wide clipboard into the current window.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Editor windows also have breakpoint functions.  Lines with a breakpoint set are
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								specially marked.  Breakpoints only have an effect when running under the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								debugger.  Breakpoints for a file are saved in the user’ s .idlerc directory.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Set Breakpoint< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Set a breakpoint on the current line.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Clear Breakpoint< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Clear the breakpoint on that line.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Shell and Output windows have the following.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dl  class = "docutils" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dt > Go to file/line< / dt > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< dd > Same as in Debug menu.< / dd > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / dl > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "editing-and-navigation" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h2 > 25.5.2. Editing and navigation< a  class = "headerlink"  href = "#editing-and-navigation"  title = "Permalink to this headline" > ¶< / a > < / h2 > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > In this section, ‘ C’  refers to the < code  class = "kbd docutils literal" > < span  class = "pre" > Control< / span > < / code >  key on Windows and Unix and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the < code  class = "kbd docutils literal" > < span  class = "pre" > Command< / span > < / code >  key on Mac OSX.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< ul > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > Backspace< / span > < / code >  deletes to the left; < code  class = "kbd docutils literal" > < span  class = "pre" > Del< / span > < / code >  deletes to the right< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > C-Backspace< / span > < / code >  delete word left; < code  class = "kbd docutils literal" > < span  class = "pre" > C-Del< / span > < / code >  delete word to the right< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > Arrow keys and < code  class = "kbd docutils literal" > < span  class = "pre" > Page< / span >  < span  class = "pre" > Up< / span > < / code > /< code  class = "kbd docutils literal" > < span  class = "pre" > Page< / span >  < span  class = "pre" > Down< / span > < / code >  to move around< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > C-LeftArrow< / span > < / code >  and < code  class = "kbd docutils literal" > < span  class = "pre" > C-RightArrow< / span > < / code >  moves by words< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > Home< / span > < / code > /< code  class = "kbd docutils literal" > < span  class = "pre" > End< / span > < / code >  go to begin/end of line< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > C-Home< / span > < / code > /< code  class = "kbd docutils literal" > < span  class = "pre" > C-End< / span > < / code >  go to begin/end of file< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < p  class = "first" > Some useful Emacs bindings are inherited from Tcl/Tk:< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div > < ul  class = "simple" > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-a< / span > < / code >  beginning of line< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-e< / span > < / code >  end of line< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-k< / span > < / code >  kill line (but doesn’ t put it in clipboard)< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-l< / span > < / code >  center window around the insertion point< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-b< / span > < / code >  go backward one character without deleting (usually you can
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								also use the cursor key for this)< / li > 
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-f< / span > < / code >  go forward one character without deleting (usually you can
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								also use the cursor key for this)< / li > 
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-p< / span > < / code >  go up one line (usually you can also use the cursor key for
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								this)< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > C-d< / span > < / code >  delete next character< / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > < / blockquote > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > Standard keybindings (like < code  class = "kbd docutils literal" > < span  class = "pre" > C-c< / span > < / code >  to copy and < code  class = "kbd docutils literal" > < span  class = "pre" > C-v< / span > < / code >  to paste)
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								may work.  Keybindings are selected in the Configure IDLE dialog.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "automatic-indentation" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.2.1. Automatic indentation< a  class = "headerlink"  href = "#automatic-indentation"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > After a block-opening statement, the next line is indented by 4 spaces (in the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Python Shell window by one tab).  After certain keywords (break, return etc.)
							 
						 
					
						
							
								
									
										
										
										
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								the next line is dedented.  In leading indentation, < code  class = "kbd docutils literal" > < span  class = "pre" > Backspace< / span > < / code >  deletes up
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								to 4 spaces if they are there. < code  class = "kbd docutils literal" > < span  class = "pre" > Tab< / span > < / code >  inserts spaces (in the Python
							 
						 
					
						
							
								
									
										
										
										
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								Shell window one tab), number depends on Indent width. Currently, tabs
							 
						 
					
						
							
								
									
										
										
										
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								are restricted to four spaces due to Tcl/Tk limitations.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > See also the indent/dedent region commands in the edit menu.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "completions" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.2.2. Completions< a  class = "headerlink"  href = "#completions"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Completions are supplied for functions, classes, and attributes of classes,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								both built-in and user-defined. Completions are also provided for
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								filenames.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > The AutoCompleteWindow (ACW) will open after a predefined delay (default is
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								two seconds) after a ‘ .’  or (in a string) an os.sep is typed. If after one
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								of those characters (plus zero or more other characters) a tab is typed
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the ACW will open immediately if a possible continuation is found.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > If there is only one possible completion for the characters entered, a
							 
						 
					
						
							
								
									
										
										
										
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								< code  class = "kbd docutils literal" > < span  class = "pre" > Tab< / span > < / code >  will supply that completion without opening the ACW.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > ‘ Show Completions’  will force open a completions window, by default the
							 
						 
					
						
							
								
									
										
										
										
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								< code  class = "kbd docutils literal" > < span  class = "pre" > C-space< / span > < / code >  will open a completions window. In an empty
							 
						 
					
						
							
								
									
										
										
										
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								string, this will contain the files in the current directory. On a
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								blank line, it will contain the built-in and user-defined functions and
							 
						 
					
						
							
								
									
										
										
										
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								classes in the current namespaces, plus any modules imported. If some
							 
						 
					
						
							
								
									
										
										
										
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								characters have been entered, the ACW will attempt to be more specific.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > If a string of characters is typed, the ACW selection will jump to the
							 
						 
					
						
							
								
									
										
										
										
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								entry most closely matching those characters.  Entering a < code  class = "kbd docutils literal" > < span  class = "pre" > tab< / span > < / code >  will
							 
						 
					
						
							
								
									
										
										
										
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								cause the longest non-ambiguous match to be entered in the Editor window or
							 
						 
					
						
							
								
									
										
										
										
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								Shell.  Two < code  class = "kbd docutils literal" > < span  class = "pre" > tab< / span > < / code >  in a row will supply the current ACW selection, as
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								will return or a double click.  Cursor keys, Page Up/Down, mouse selection,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								and the scroll wheel all operate on the ACW.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > “ Hidden”  attributes can be accessed by typing the beginning of hidden
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								name after a ‘ .’ , e.g. ‘ _’ . This allows access to modules with
							 
						 
					
						
							
								
									
										
										
										
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								< code  class = "docutils literal" > < span  class = "pre" > __all__< / span > < / code >  set, or to class-private attributes.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > Completions and the ‘ Expand Word’  facility can save a lot of typing!< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Completions are currently limited to those in the namespaces. Names in
							 
						 
					
						
							
								
									
										
										
										
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								an Editor window which are not via < code  class = "docutils literal" > < span  class = "pre" > __main__< / span > < / code >  and < a  class = "reference internal"  href = "sys.html#sys.modules"  title = "sys.modules" > < code  class = "xref py py-data docutils literal" > < span  class = "pre" > sys.modules< / span > < / code > < / a >  will
							 
						 
					
						
							
								
									
										
										
										
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								not be found.  Run the module once with your imports to correct this situation.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Note that IDLE itself places quite a few modules in sys.modules, so
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								much can be found by default, e.g. the re module.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > If you don’ t like the ACW popping up unbidden, simply make the delay
							 
						 
					
						
							
								
									
										
										
										
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								longer or disable the extension.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "calltips" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.2.3. Calltips< a  class = "headerlink"  href = "#calltips"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > A calltip is shown when one types < code  class = "kbd docutils literal" > < span  class = "pre" > (< / span > < / code >  after the name of an < em > accessible< / em > 
							 
						 
					
						
							
								
									
										
										
										
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								function.  A name expression may include dots and subscripts.  A calltip
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								remains until it is clicked, the cursor is moved out of the argument area,
							 
						 
					
						
							
								
									
										
										
										
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								or < code  class = "kbd docutils literal" > < span  class = "pre" > )< / span > < / code >  is typed.  When the cursor is in the argument part of a definition,
							 
						 
					
						
							
								
									
										
										
										
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								the menu or shortcut display a calltip.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > A calltip consists of the function signature and the first line of the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								docstring.  For builtins without an accessible signature, the calltip
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								consists of all lines up the fifth line or the first blank line.  These
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								details may change.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > The set of < em > accessible< / em >  functions depends on what modules have been imported
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								into the user process, including those imported by Idle itself,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								and what definitions have been run, all since the last restart.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > For example, restart the Shell and enter < code  class = "docutils literal" > < span  class = "pre" > itertools.count(< / span > < / code > .  A calltip
							 
						 
					
						
							
								
									
										
										
										
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								appears because Idle imports itertools into the user process for its own use.
							 
						 
					
						
							
								
									
										
										
										
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								(This could change.)  Enter < code  class = "docutils literal" > < span  class = "pre" > turtle.write(< / span > < / code >  and nothing appears.  Idle does
							 
						 
					
						
							
								
									
										
										
										
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								not import turtle.  The menu or shortcut do nothing either.  Enter
							 
						 
					
						
							
								
									
										
										
										
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								< code  class = "docutils literal" > < span  class = "pre" > import< / span >  < span  class = "pre" > turtle< / span > < / code >  and then < code  class = "docutils literal" > < span  class = "pre" > turtle.write(< / span > < / code >  will work.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > In an editor, import statements have no effect until one runs the file.  One
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								might want to run a file after writing the import statements at the top,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								or immediately run an existing file before editing.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "python-shell-window" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > 25.5.2.4. Python Shell window< a  class = "headerlink"  href = "#python-shell-window"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
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								< ul > 
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > C-c< / span > < / code >  interrupts executing command< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > C-d< / span > < / code >  sends end-of-file; closes window if typed at a < code  class = "docutils literal" > < span  class = "pre" > > > > < / span > < / code >  prompt< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < p  class = "first" > < code  class = "kbd docutils literal" > < span  class = "pre" > Alt-/< / span > < / code >  (Expand word) is also useful to reduce typing< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > Command history< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< ul  class = "simple" > 
							 
						 
					
						
							
								
									
										
										
										
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								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > Alt-p< / span > < / code >  retrieves previous command matching what you have typed. On
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								OS X use < code  class = "kbd docutils literal" > < span  class = "pre" > C-p< / span > < / code > .< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > Alt-n< / span > < / code >  retrieves next. On OS X use < code  class = "kbd docutils literal" > < span  class = "pre" > C-n< / span > < / code > .< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < code  class = "kbd docutils literal" > < span  class = "pre" > Return< / span > < / code >  while on any previous command retrieves that command< / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
									
										
										
										
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								< div  class = "section"  id = "text-colors" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > 25.5.2.5. Text colors< a  class = "headerlink"  href = "#text-colors"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > Idle defaults to black on white text, but colors text with special meanings.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								For the shell, these are shell output, shell error, user output, and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								user error.  For Python code, at the shell prompt or in an editor, these are
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								keywords, builtin class and function names, names following < code  class = "docutils literal" > < span  class = "pre" > class< / span > < / code >  and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< code  class = "docutils literal" > < span  class = "pre" > def< / span > < / code > , strings, and comments. For any text window, these are the cursor (when
							 
						 
					
						
							
								
									
										
										
										
											2015-09-24 23:18:57 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								present), found text (when possible), and selected text.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Text coloring is done in the background, so uncolorized text is occasionally
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								visible.  To change the color scheme, use the Configure IDLE dialog
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Highlighting tab.  The marking of debugger breakpoint lines in the editor and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								text in popups and dialogs is not user-configurable.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
									
										
										
										
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								< div  class = "section"  id = "startup-and-code-execution" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h2 > 25.5.3. Startup and code execution< a  class = "headerlink"  href = "#startup-and-code-execution"  title = "Permalink to this headline" > ¶< / a > < / h2 > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > Upon startup with the < code  class = "docutils literal" > < span  class = "pre" > -s< / span > < / code >  option, IDLE will execute the file referenced by
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the environment variables < span  class = "target"  id = "index-5" > < / span > < code  class = "xref std std-envvar docutils literal" > < span  class = "pre" > IDLESTARTUP< / span > < / code >  or < span  class = "target"  id = "index-6" > < / span > < a  class = "reference internal"  href = "../using/cmdline.html#envvar-PYTHONSTARTUP" > < code  class = "xref std std-envvar docutils literal" > < span  class = "pre" > PYTHONSTARTUP< / span > < / code > < / a > .
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								IDLE first checks for < code  class = "docutils literal" > < span  class = "pre" > IDLESTARTUP< / span > < / code > ; if < code  class = "docutils literal" > < span  class = "pre" > IDLESTARTUP< / span > < / code >  is present the file
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								referenced is run.  If < code  class = "docutils literal" > < span  class = "pre" > IDLESTARTUP< / span > < / code >  is not present, IDLE checks for
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< code  class = "docutils literal" > < span  class = "pre" > PYTHONSTARTUP< / span > < / code > .  Files referenced by these environment variables are
							 
						 
					
						
							
								
									
										
										
										
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								convenient places to store functions that are used frequently from the IDLE
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								shell, or for executing import statements to import common modules.< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< p > In addition, < code  class = "docutils literal" > < span  class = "pre" > Tk< / span > < / code >  also loads a startup file if it is present.  Note that the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Tk file is loaded unconditionally.  This additional file is < code  class = "docutils literal" > < span  class = "pre" > .Idle.py< / span > < / code >  and is
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								looked for in the user’ s home directory.  Statements in this file will be
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								executed in the Tk namespace, so this file is not useful for importing
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								functions to be used from IDLE’ s Python shell.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "command-line-usage" > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-24 23:18:57 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< h3 > 25.5.3.1. Command line usage< a  class = "headerlink"  href = "#command-line-usage"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
											2016-08-25 01:22:30 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< div  class = "highlight-none" > < div  class = "highlight" > < pre > < span > < / span > idle.py [-c command] [-d] [-e] [-h] [-i] [-r file] [-s] [-t title] [-] [arg] ...
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
									
										
										
										
											2015-09-23 03:52:23 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								-c command  run command in the shell window
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								-d          enable debugger and open shell window
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								-e          open editor window
							 
						 
					
						
							
								
									
										
										
										
											2016-08-30 16:58:01 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								-h          print help message with legal combinations and exit
							 
						 
					
						
							
								
									
										
										
										
											2015-09-23 03:52:23 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								-i          open shell window
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								-r file     run file in shell window
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								-s          run $IDLESTARTUP or $PYTHONSTARTUP first, in shell window
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								-t title    set title of shell window
							 
						 
					
						
							
								
									
										
										
										
											2015-09-23 03:52:23 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								-           run stdin in shell (- must be last option before args)
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / pre > < / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > If there are arguments:< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-23 03:52:23 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< ul  class = "simple" > 
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > If < code  class = "docutils literal" > < span  class = "pre" > -< / span > < / code > , < code  class = "docutils literal" > < span  class = "pre" > -c< / span > < / code > , or < code  class = "docutils literal" > < span  class = "pre" > r< / span > < / code >  is used, all arguments are placed in
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< code  class = "docutils literal" > < span  class = "pre" > sys.argv[1:...]< / span > < / code >  and < code  class = "docutils literal" > < span  class = "pre" > sys.argv[0]< / span > < / code >  is set to < code  class = "docutils literal" > < span  class = "pre" > ''< / span > < / code > , < code  class = "docutils literal" > < span  class = "pre" > '-c'< / span > < / code > ,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								or < code  class = "docutils literal" > < span  class = "pre" > '-r'< / span > < / code > .  No editor window is opened, even if that is the default
							 
						 
					
						
							
								
									
										
										
										
											2015-09-23 03:52:23 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								set in the Options dialog.< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > Otherwise, arguments are files opened for editing and
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< code  class = "docutils literal" > < span  class = "pre" > sys.argv< / span > < / code >  reflects the arguments passed to IDLE itself.< / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-23 03:52:23 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
									
										
										
										
											2017-06-13 21:32:16 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "startup-failure" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< h3 > 25.5.3.2. Startup failure< a  class = "headerlink"  href = "#startup-failure"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > IDLE uses a socket to communicate between the IDLE GUI process and the user
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								code execution process.  A connection must be established whenever the Shell
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								starts or restarts.  (The latter is indicated by a divider line that says
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								‘ RESTART’ ). If the user process fails to connect to the GUI process, it
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								displays a < code  class = "docutils literal" > < span  class = "pre" > Tk< / span > < / code >  error box with a ‘ cannot connect’  message that directs the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								user here.  It then exits.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > A common cause of failure is a user-written file with the same name as a
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								standard library module, such as < em > random.py< / em >  and < em > tkinter.py< / em > . When such a
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								file is located in the same directory as a file that is about to be run,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								IDLE cannot import the stdlib file.  The current fix is to rename the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								user file.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Though less common than in the past, an antivirus or firewall program may
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								stop the connection.  If the program cannot be taught to allow the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								connection, then it must be turned off for IDLE to work.  It is safe to
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								allow this internal connection because no data is visible on external
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								ports.  A similar problem is a network mis-configuration that blocks
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								connections.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > Python installation issues occasionally stop IDLE: multiple versions can
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								clash, or a single installation might need admin access.  If one undo the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								clash, or cannot or does not want to run as admin, it might be easiest to
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								completely remove Python and start over.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > A zombie pythonw.exe process could be a problem.  On Windows, use Task
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Manager to detect and stop one.  Sometimes a restart initiated by a program
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								crash or Keyboard Interrupt (control-C) may fail to connect.  Dismissing
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the error box or Restart Shell on the Shell menu may fix a temporary problem.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > When IDLE first starts, it attempts to read user configuration files in
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								~/.idlerc/ (~ is one’ s home directory).  If there is a problem, an error
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								message should be displayed.  Leaving aside random disk glitches, this can
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								be prevented by never editing the files by hand, using the configuration
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								dialog, under Options, instead Options.  Once it happens, the solution may
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								be to delete one or more of the configuration files.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > If IDLE quits with no message, and it was not started from a console, try
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								starting from a console (< code  class = "docutils literal" > < span  class = "pre" > python< / span >  < span  class = "pre" > -m< / span >  < span  class = "pre" > idlelib)< / span > < / code >  and see if a message appears.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
									
										
										
										
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								< div  class = "section"  id = "idle-console-differences" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > 25.5.3.3. IDLE-console differences< a  class = "headerlink"  href = "#idle-console-differences"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > As much as possible, the result of executing Python code with IDLE is the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								same as executing the same code in a console window.  However, the different
							 
						 
					
						
							
								
									
										
										
										
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								interface and operation occasionally affect visible results.  For instance,
							 
						 
					
						
							
								
									
										
										
										
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								< code  class = "docutils literal" > < span  class = "pre" > sys.modules< / span > < / code >  starts with more entries.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > IDLE also replaces < code  class = "docutils literal" > < span  class = "pre" > sys.stdin< / span > < / code > , < code  class = "docutils literal" > < span  class = "pre" > sys.stdout< / span > < / code > , and < code  class = "docutils literal" > < span  class = "pre" > sys.stderr< / span > < / code >  with
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								objects that get input from and send output to the Shell window.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								When this window has the focus, it controls the keyboard and screen.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								This is normally transparent, but functions that directly access the keyboard
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								and screen will not work.  If < code  class = "docutils literal" > < span  class = "pre" > sys< / span > < / code >  is reset with < code  class = "docutils literal" > < span  class = "pre" > importlib.reload(sys)< / span > < / code > ,
							 
						 
					
						
							
								
									
										
										
										
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								IDLE’ s changes are lost and things like < code  class = "docutils literal" > < span  class = "pre" > input< / span > < / code > , < code  class = "docutils literal" > < span  class = "pre" > raw_input< / span > < / code > , and
							 
						 
					
						
							
								
									
										
										
										
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								< code  class = "docutils literal" > < span  class = "pre" > print< / span > < / code >  will not work correctly.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > With IDLE’ s Shell, one enters, edits, and recalls complete statements.
							 
						 
					
						
							
								
									
										
										
										
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								Some consoles only work with a single physical line at a time.  IDLE uses
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< code  class = "docutils literal" > < span  class = "pre" > exec< / span > < / code >  to run each statement.  As a result, < code  class = "docutils literal" > < span  class = "pre" > '__builtins__'< / span > < / code >  is always
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								defined for each statement.< / p > 
							 
						 
					
						
							
								
									
										
										
										
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								< / div > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "running-without-a-subprocess" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > 25.5.3.4. Running without a subprocess< a  class = "headerlink"  href = "#running-without-a-subprocess"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
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								< p > By default, IDLE executes user code in a separate subprocess via a socket,
							 
						 
					
						
							
								
									
										
										
										
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								which uses the internal loopback interface.  This connection is not
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								externally visible and no data is sent to or received from the Internet.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								If firewall software complains anyway, you can ignore it.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > If the attempt to make the socket connection fails, Idle will notify you.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Such failures are sometimes transient, but if persistent, the problem
							 
						 
					
						
							
								
									
										
										
										
											2017-06-13 21:32:16 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								may be either a firewall blocking the connection or misconfiguration of
							 
						 
					
						
							
								
									
										
										
										
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								a particular system.  Until the problem is fixed, one can run Idle with
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the -n command line switch.< / p > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< p > If IDLE is started with the -n command line switch it will run in a
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								single process and will not create the subprocess which runs the RPC
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Python execution server.  This can be useful if Python cannot create
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								the subprocess or the RPC socket interface on your platform.  However,
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								in this mode user code is not isolated from IDLE itself.  Also, the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								environment is not restarted when Run/Run Module (F5) is selected.  If
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								your code has been modified, you must reload() the affected modules and
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								re-import any specific items (e.g. from foo import baz) if the changes
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								are to take effect.  For these reasons, it is preferable to run IDLE
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								with the default subprocess if at all possible.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "deprecated" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< p > < span  class = "versionmodified" > Deprecated since version 3.4.< / span > < / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "help-and-preferences" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h2 > 25.5.4. Help and preferences< a  class = "headerlink"  href = "#help-and-preferences"  title = "Permalink to this headline" > ¶< / a > < / h2 > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "additional-help-sources" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > 25.5.4.1. Additional help sources< a  class = "headerlink"  href = "#additional-help-sources"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< p > IDLE includes a help menu entry called “ Python Docs”  that will open the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								extensive sources of help, including tutorials, available at docs.python.org.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Selected URLs can be added or removed from the help menu at any time using the
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								Configure IDLE dialog. See the IDLE help option in the help menu of IDLE for
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								more information.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "setting-preferences" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > 25.5.4.2. Setting preferences< a  class = "headerlink"  href = "#setting-preferences"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< p > The font preferences, highlighting, keys, and general preferences can be
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								changed via Configure IDLE on the Option menu.  Keys can be user defined;
							 
						 
					
						
							
								
									
										
										
										
											2017-06-13 21:32:16 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								IDLE ships with four built-in key sets. In addition, a user can create a
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								custom key set in the Configure IDLE dialog under the keys tab.< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< div  class = "section"  id = "extensions" > 
							 
						 
					
						
							
								
									
										
										
										
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								< h3 > 25.5.4.3. Extensions< a  class = "headerlink"  href = "#extensions"  title = "Permalink to this headline" > ¶< / a > < / h3 > 
							 
						 
					
						
							
								
									
										
										
										
											2017-06-13 21:32:16 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< p > IDLE contains an extension facility.  Preferences for extensions can be
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								changed with Configure Extensions. See the beginning of config-extensions.def
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								in the idlelib directory for further information.  The default extensions
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								are currently:< / p > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< ul  class = "simple" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > FormatParagraph< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > AutoExpand< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > ZoomHeight< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > ScriptBinding< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > CallTips< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > ParenMatch< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > AutoComplete< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > CodeContext< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > RstripExtension< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								          < / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								        < / div > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								      < / div > 
							 
						 
					
						
							
								
									
										
										
										
											2016-03-01 00:29:57 -05:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								      < div  class = "sphinxsidebar"  role = "navigation"  aria-label = "main navigation" > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								        < div  class = "sphinxsidebarwrapper" > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  < h3 > < a  href = "../contents.html" > Table Of Contents< / a > < / h3 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  < ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#" > 25.5. IDLE< / a > < ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#menus" > 25.5.1. Menus< / a > < ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#file-menu-shell-and-editor" > 25.5.1.1. File menu (Shell and Editor)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#edit-menu-shell-and-editor" > 25.5.1.2. Edit menu (Shell and Editor)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#format-menu-editor-window-only" > 25.5.1.3. Format menu (Editor window only)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#run-menu-editor-window-only" > 25.5.1.4. Run menu (Editor window only)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#shell-menu-shell-window-only" > 25.5.1.5. Shell menu (Shell window only)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#debug-menu-shell-window-only" > 25.5.1.6. Debug menu (Shell window only)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#options-menu-shell-and-editor" > 25.5.1.7. Options menu (Shell and Editor)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#window-menu-shell-and-editor" > 25.5.1.8. Window menu (Shell and Editor)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#help-menu-shell-and-editor" > 25.5.1.9. Help menu (Shell and Editor)< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#context-menus" > 25.5.1.10. Context Menus< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#editing-and-navigation" > 25.5.2. Editing and navigation< / a > < ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#automatic-indentation" > 25.5.2.1. Automatic indentation< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#completions" > 25.5.2.2. Completions< / a > < / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-29 01:55:57 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#calltips" > 25.5.2.3. Calltips< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#python-shell-window" > 25.5.2.4. Python Shell window< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#text-colors" > 25.5.2.5. Text colors< / a > < / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-24 23:18:57 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#startup-and-code-execution" > 25.5.3. Startup and code execution< / a > < ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#command-line-usage" > 25.5.3.1. Command line usage< / a > < / li > 
							 
						 
					
						
							
								
									
										
										
										
											2017-06-13 21:32:16 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#startup-failure" > 25.5.3.2. Startup failure< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#idle-console-differences" > 25.5.3.3. IDLE-console differences< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#running-without-a-subprocess" > 25.5.3.4. Running without a subprocess< / a > < / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-24 23:18:57 -04:00 
										
									 
								 
							 
							
								
									
										 
									 
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#help-and-preferences" > 25.5.4. Help and preferences< / a > < ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#additional-help-sources" > 25.5.4.1. Additional help sources< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#setting-preferences" > 25.5.4.2. Setting preferences< / a > < / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< li > < a  class = "reference internal"  href = "#extensions" > 25.5.4.3. Extensions< / a > < / li > 
							 
						 
					
						
							
								
									
										
										
										
											2015-09-20 19:57:13 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / li > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								< / ul > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  < h4 > Previous topic< / h4 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  < p  class = "topless" > < a  href = "tkinter.scrolledtext.html" 
							 
						 
					
						
							
								
									
										
										
										
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								                        title="previous chapter">25.4. < code  class = "docutils literal" > < span  class = "pre" > tkinter.scrolledtext< / span > < / code >  —  Scrolled Text Widget< / a > < / p > 
							 
						 
					
						
							
								
									
										
										
										
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								  < h4 > Next topic< / h4 > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								  < p  class = "topless" > < a  href = "othergui.html" 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							 
							
							
								                        title="next chapter">25.6. Other Graphical User Interface Packages< / a > < / p > 
							 
						 
					
						
							
								
									
										
										
										
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