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[3.13] gh-129873: IDLE: Improve help.py's method of parsing HTML (GH-129859) (#129884)

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gh-129873: IDLE: Improve help.py's method of parsing HTML (GH-129859)

In `help.copy_strip`, only copy the text `<section>`.  In `help.HelpParser.handle_starttag` and elsewhere, remove code to skip the no longer present html.  Add a reminder at the top of idle.rst to run copy_strip after changes.
---------

(cherry picked from commit 6fbf15f98e)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
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Miss Islington (bot) 2025-02-09 10:19:36 +01:00 • committed by GitHub
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3
Doc/library/idle.rst
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@ -12,6 +12,9 @@ IDLE --- Python editor and shell
single: Python Editor single: Python Editor
single: Integrated Development Environment single: Integrated Development Environment
..
Remember to update Lib/idlelib/help.html with idlelib.help.copy_source() when modifying this file.
-------------- --------------
IDLE is Python's Integrated Development and Learning Environment. IDLE is Python's Integrated Development and Learning Environment.

3
Lib/idlelib/News3.txt
View file

@ -19,6 +19,9 @@ Released on 2024-10-07
gh-120104: Fix padding in config and search dialog windows in IDLE. gh-120104: Fix padding in config and search dialog windows in IDLE.
gh-129873: Simplify displaying the IDLE doc by only copying the text
section of idle.html to idlelib/help.html. Patch by Stan Ulbrych.
gh-120083: Add explicit black IDLE Hovertip foreground color needed for gh-120083: Add explicit black IDLE Hovertip foreground color needed for
recent macOS. Fixes Sonoma showing unreadable white on pale yellow. recent macOS. Fixes Sonoma showing unreadable white on pale yellow.
Patch by John Riggles. Patch by John Riggles.

391
Lib/idlelib/help.html
View file

@ -1,231 +1,7 @@
<!DOCTYPE html>
<html lang="en" data-content_root="../">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" /><meta name="viewport" content="width=device-width, initial-scale=1" />
<title>IDLE — Python editor and shell &#8212; Python 3.14.0a4 documentation</title><meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=b86133f3" />
<link rel="stylesheet" type="text/css" href="../_static/pydoctheme.css?v=aa5eeaf2" />
<link id="pygments_dark_css" media="(prefers-color-scheme: dark)" rel="stylesheet" type="text/css" href="../_static/pygments_dark.css?v=5349f25f" />
<script src="../_static/documentation_options.js?v=058caec0"></script>
<script src="../_static/doctools.js?v=9bcbadda"></script>
<script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
<script src="../_static/sidebar.js"></script>
<link rel="search" type="application/opensearchdescription+xml"
title="Search within Python 3.14.0a4 documentation"
href="../_static/opensearch.xml"/>
<link rel="author" title="About these documents" href="../about.html" />
<link rel="index" title="Index" href="../genindex.html" />
<link rel="search" title="Search" href="../search.html" />
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<link rel="canonical" href="https://docs.python.org/3/library/idle.html" />
<style>
@media only screen {
table.full-width-table {
width: 100%;
}
}
</style>
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<h3><a href="../contents.html">Table of Contents</a></h3>
<ul>
<li><a class="reference internal" href="#">IDLE — Python editor and shell</a><ul>
<li><a class="reference internal" href="#menus">Menus</a><ul>
<li><a class="reference internal" href="#file-menu-shell-and-editor">File menu (Shell and Editor)</a></li>
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<li><a class="reference internal" href="#key-bindings">Key bindings</a></li>
<li><a class="reference internal" href="#automatic-indentation">Automatic indentation</a></li>
<li><a class="reference internal" href="#search-and-replace">Search and Replace</a></li>
<li><a class="reference internal" href="#completions">Completions</a></li>
<li><a class="reference internal" href="#calltips">Calltips</a></li>
<li><a class="reference internal" href="#code-context">Code Context</a></li>
<li><a class="reference internal" href="#shell-window">Shell window</a></li>
<li><a class="reference internal" href="#text-colors">Text colors</a></li>
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<li><a class="reference internal" href="#startup-failure">Startup failure</a></li>
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<li><a class="reference internal" href="#developing-tkinter-applications">Developing tkinter applications</a></li>
<li><a class="reference internal" href="#running-without-a-subprocess">Running without a subprocess</a></li>
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<li><a class="reference internal" href="#help-and-preferences">Help and Preferences</a><ul>
<li><a class="reference internal" href="#help-sources">Help sources</a></li>
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<li><a class="reference internal" href="#idle-on-macos">IDLE on macOS</a></li>
<li><a class="reference internal" href="#extensions">Extensions</a></li>
</ul>
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<li><a class="reference internal" href="#module-idlelib">idlelib — implementation of IDLE application</a></li>
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<section id="idle"> <section id="idle">
<span id="idle-python-editor-and-shell"></span><h1>IDLE — Python editor and shell<a class="headerlink" href="#idle" title="Link to this heading"></a></h1> <span id="idle-python-editor-and-shell"></span><h1>IDLE — Python editor and shell<a class="headerlink" href="#idle" title="Link to this heading"></a></h1>
<p><strong>Source code:</strong> <a class="extlink-source reference external" href="https://github.com/python/cpython/tree/main/Lib/idlelib/">Lib/idlelib/</a></p> <p><strong>Source code:</strong> <a class="extlink-source reference external" href="https://github.com/python/cpython/tree/main/Lib/idlelib/">Lib/idlelib/</a></p>
<hr class="docutils" id="index-0" /> <span class="target" id="index-0"></span><hr class="docutils" />
<p>IDLE is Python’s Integrated Development and Learning Environment.</p> <p>IDLE is Python’s Integrated Development and Learning Environment.</p>
<p>IDLE has the following features:</p> <p>IDLE has the following features:</p>
<ul class="simple"> <ul class="simple">
@ -1027,168 +803,3 @@ <h3>Extensions<a class="headerlink" href="#extensions" title="Link to this headi
</section> </section>
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29
Lib/idlelib/help.py
View file

@ -20,7 +20,7 @@
HelpWindow - Display HelpFrame in a standalone window. HelpWindow - Display HelpFrame in a standalone window.
copy_strip - Copy idle.html to help.html, rstripping each line. copy_strip - Copy the text part of idle.html to help.html while rstripping each line.
show_idlehelp - Create HelpWindow. Called in EditorWindow.help_dialog. show_idlehelp - Create HelpWindow. Called in EditorWindow.help_dialog.
""" """
@ -54,7 +54,6 @@ def __init__(self, text):
self.text = text # Text widget we're rendering into. self.text = text # Text widget we're rendering into.
self.tags = '' # Current block level text tags to apply. self.tags = '' # Current block level text tags to apply.
self.chartags = '' # Current character level text tags. self.chartags = '' # Current character level text tags.
self.show = False # Exclude html page navigation.
self.hdrlink = False # Exclude html header links. self.hdrlink = False # Exclude html header links.
self.level = 0 # Track indentation level. self.level = 0 # Track indentation level.
self.pre = False # Displaying preformatted text? self.pre = False # Displaying preformatted text?
@ -77,11 +76,7 @@ def handle_starttag(self, tag, attrs):
if a == 'class': if a == 'class':
class_ = v class_ = v
s = '' s = ''
if tag == 'section' and attrs == [('id', 'idle')]: if tag == 'p' and self.prevtag and not self.prevtag[0]:
self.show = True # Start main content.
elif tag == 'div' and class_ == 'clearer':
self.show = False # End main content.
elif tag == 'p' and self.prevtag and not self.prevtag[0]:
# Begin a new block for <p> tags after a closed tag. # Begin a new block for <p> tags after a closed tag.
# Avoid extra lines, e.g. after <pre> tags. # Avoid extra lines, e.g. after <pre> tags.
lastline = self.text.get('end-1c linestart', 'end-1c') lastline = self.text.get('end-1c linestart', 'end-1c')
@ -112,7 +107,6 @@ def handle_starttag(self, tag, attrs):
s = '\n' s = '\n'
elif tag == 'pre': elif tag == 'pre':
self.pre = True self.pre = True
if self.show:
self.text.insert('end', '\n\n') self.text.insert('end', '\n\n')
self.tags = 'preblock' self.tags = 'preblock'
elif tag == 'a' and class_ == 'headerlink': elif tag == 'a' and class_ == 'headerlink':
@ -120,11 +114,9 @@ def handle_starttag(self, tag, attrs):
elif tag == 'h1': elif tag == 'h1':
self.tags = tag self.tags = tag
elif tag in ['h2', 'h3']: elif tag in ['h2', 'h3']:
if self.show:
self.header = '' self.header = ''
self.text.insert('end', '\n\n') self.text.insert('end', '\n\n')
self.tags = tag self.tags = tag
if self.show:
self.text.insert('end', s, (self.tags, self.chartags)) self.text.insert('end', s, (self.tags, self.chartags))
self.prevtag = (True, tag) self.prevtag = (True, tag)
@ -132,7 +124,6 @@ def handle_endtag(self, tag):
"Handle endtags in help.html." "Handle endtags in help.html."
if tag in ['h1', 'h2', 'h3']: if tag in ['h1', 'h2', 'h3']:
assert self.level == 0 assert self.level == 0
if self.show:
indent = (' ' if tag == 'h3' else indent = (' ' if tag == 'h3' else
' ' if tag == 'h2' else ' ' if tag == 'h2' else
'') '')
@ -151,7 +142,7 @@ def handle_endtag(self, tag):
def handle_data(self, data): def handle_data(self, data):
"Handle date segments in help.html." "Handle date segments in help.html."
if self.show and not self.hdrlink: if not self.hdrlink:
d = data if self.pre else data.replace('\n', ' ') d = data if self.pre else data.replace('\n', ' ')
if self.tags == 'h1': if self.tags == 'h1':
try: try:
@ -253,7 +244,7 @@ def __init__(self, parent, filename, title):
def copy_strip(): # pragma: no cover def copy_strip(): # pragma: no cover
"""Copy idle.html to idlelib/help.html, stripping trailing whitespace. """Copy the text part of idle.html to idlelib/help.html while stripping trailing whitespace.
Files with trailing whitespace cannot be pushed to the git cpython Files with trailing whitespace cannot be pushed to the git cpython
repository. For 3.x (on Windows), help.html is generated, after repository. For 3.x (on Windows), help.html is generated, after
@ -265,7 +256,7 @@ def copy_strip(): # pragma: no cover
It can be worthwhile to occasionally generate help.html without It can be worthwhile to occasionally generate help.html without
touching idle.rst. Changes to the master version and to the doc touching idle.rst. Changes to the master version and to the doc
build system may result in changes that should not changed build system may result in changes that should not change
the displayed text, but might break HelpParser. the displayed text, but might break HelpParser.
As long as master and maintenance versions of idle.rst remain the As long as master and maintenance versions of idle.rst remain the
@ -278,10 +269,14 @@ def copy_strip(): # pragma: no cover
src = join(abspath(dirname(dirname(dirname(__file__)))), src = join(abspath(dirname(dirname(dirname(__file__)))),
'Doc', 'build', 'html', 'library', 'idle.html') 'Doc', 'build', 'html', 'library', 'idle.html')
dst = join(abspath(dirname(__file__)), 'help.html') dst = join(abspath(dirname(__file__)), 'help.html')
with open(src, 'rb') as inn,\
open(dst, 'wb') as out: with open(src, 'r', encoding="utf-8") as inn, open(dst, 'w', encoding="utf-8") as out:
copy = False
for line in inn: for line in inn:
out.write(line.rstrip() + b'\n') if '<section id="idle">' in line: copy = True
if '<div class="clearer">' in line: break
if copy: out.write(line.strip() + '\n')
print(f'{src} copied to {dst}') print(f'{src} copied to {dst}')

2
Misc/NEWS.d/next/IDLE/2025-02-08-23-42-24.gh-issue-129873.-gofkd.rst Normal file
View file

@ -0,0 +1,2 @@
Simplify displaying the IDLE doc by only copying the text section of
idle.html to idlelib/help.html. Patch by Stan Ulbrych.