gh-145896: Fix typos and stale docstrings in the traceback module (GH-145897)

Doc/library/traceback.rst

@@ -147,9 +147,7 @@ Module-Level Functions
    :ref:`traceback object <traceback-objects>` *tb*.  It is useful
    for alternate formatting of stack traces.  The optional *limit* argument has
    the same meaning as for :func:`print_tb`.  A "pre-processed" stack trace
-   entry is a :class:`FrameSummary` object containing attributes
-   :attr:`~FrameSummary.filename`, :attr:`~FrameSummary.lineno`,
-   :attr:`~FrameSummary.name`, and :attr:`~FrameSummary.line` representing the
+   entry is a :class:`FrameSummary` object with attributes representing the
    information that is usually printed for a stack trace.
 
 
@@ -181,7 +179,7 @@ Module-Level Functions
 .. function:: format_exception_only(exc, /[, value], *, show_group=False)
 
    Format the exception part of a traceback using an exception value such as
-   given by :data:`sys.last_value`.  The return value is a list of strings, each
+   given by :data:`sys.last_exc`.  The return value is a list of strings, each
    ending in a newline.  The list contains the exception's message, which is
    normally a single string; however, for :exc:`SyntaxError` exceptions, it
    contains several lines that (when printed) display detailed information
@@ -347,7 +345,7 @@ the module-level functions described above.
 
    .. attribute:: exc_type
 
-      The class of the original traceback.
+      The class of the original exception.
 
       .. deprecated:: 3.13
 
@@ -391,7 +389,7 @@ the module-level functions described above.
 
       For syntax errors - the compiler error message.
 
-   .. classmethod:: from_exception(exc, *, limit=None, lookup_lines=True, capture_locals=False)
+   .. classmethod:: from_exception(exc, *, limit=None, lookup_lines=True, capture_locals=False, compact=False, max_group_width=15, max_group_depth=10)
 
       Capture an exception for later rendering. *limit*, *lookup_lines* and
       *capture_locals* are as for the :class:`StackSummary` class.

Lib/traceback.py

@@ -115,10 +115,10 @@ def extract_tb(tb, limit=None):
     This is useful for alternate formatting of stack traces.  If
     'limit' is omitted or None, all entries are extracted.  A
     pre-processed stack trace entry is a FrameSummary object
-    containing attributes filename, lineno, name, and line
-    representing the information that is usually printed for a stack
-    trace.  The line is a string with leading and trailing
-    whitespace stripped; if the source is not available it is None.
+    representing the information that is usually printed for a
+    stack trace. The line attribute is a string with
+    leading and trailing whitespace stripped; if the source is not
+    available the corresponding attribute is None.
     """
     return StackSummary._extract_from_extended_frame_gen(
         _walk_tb_with_full_positions(tb), limit=limit)
@@ -295,9 +295,8 @@ def extract_stack(f=None, limit=None):
 
     The return value has the same format as for extract_tb().  The
     optional 'f' and 'limit' arguments have the same meaning as for
-    print_stack().  Each item in the list is a quadruple (filename,
-    line number, function name, text), and the entries are in order
-    from oldest to newest stack frame.
+    print_stack().  Each item in the list is a FrameSummary object,
+    and the entries are in order from oldest to newest stack frame.
     """
     if f is None:
         f = sys._getframe().f_back
@@ -325,7 +324,7 @@ class FrameSummary:
       active when the frame was captured.
     - :attr:`name` The name of the function or method that was executing
       when the frame was captured.
-    - :attr:`line` The text from the linecache module for the
+    - :attr:`line` The text from the linecache module for the line
       of code that was running when the frame was captured.
     - :attr:`locals` Either None if locals were not supplied, or a dict
       mapping the name to the repr() of the variable.
@@ -1053,7 +1052,7 @@ def _wlen(s: str) -> int:
 
 
 def _display_width(line, offset=None):
-    """Calculate the extra amount of width space the given source
+    """Calculate the amount of width space the given source
     code segment might take if it were to be displayed on a fixed
     width output device. Supports wide unicode characters and emojis."""
 
@@ -1134,7 +1133,7 @@ class TracebackException:
     def __init__(self, exc_type, exc_value, exc_traceback, *, limit=None,
             lookup_lines=True, capture_locals=False, compact=False,
             max_group_width=15, max_group_depth=10, save_exc_type=True, _seen=None):
-        # NB: we need to accept exc_traceback, exc_value, exc_traceback to
+        # NB: we need to accept exc_type, exc_value, exc_traceback to
         # permit backwards compat with the existing API, otherwise we
         # need stub thunk objects just to glue it together.
         # Handle loops in __cause__ or __context__.