library :mod:`lib2to3` is, however, a flexible and generic library, so it is
possible to write your own fixers for 2to3.
+.. deprecated-removed:: 3.11 3.13
+ The ``lib2to3`` module was marked pending for deprecation in Python 3.9
+ (raising :exc:`PendingDeprecationWarning` on import) and fully deprecated
+ in Python 3.11 (raising :exc:`DeprecationWarning`). The ``2to3`` tool is
+ part of that. It will be removed in Python 3.13.
.. _2to3-using:
Deprecated
==========
-* The :mod:`lib2to3` package is now deprecated and may not be able to parse
- Python 3.10 or newer. See the :pep:`617` (New PEG parser for CPython).
- (Contributed by Victor Stinner in :issue:`40360`.)
+* The :mod:`lib2to3` package and ``2to3`` tool are now deprecated and may not
+ be able to parse Python 3.10 or newer. See the :pep:`617` (New PEG parser for
+ CPython). (Contributed by Victor Stinner in :issue:`40360`.)
* :class:`webbrowser.MacOSX` is deprecated and will be removed in Python 3.13.
It is untested and undocumented and also not used by webbrowser itself.