mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-12-23 09:19:18 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

bpo-40360: [doc] Rephrase deprecation note about lib2to3 (GH-28122)

Browse source 
(cherry picked from commit f0b63d5b56)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
This commit is contained in:
Miss Islington (bot) 2021-09-02 08:37:14 -07:00 • committed by GitHub
parent 3d56272e4e
commit 559af74346
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

15
Doc/library/2to3.rst
View file

@ -464,12 +464,15 @@ and off individually. They are described here in more detail.
--------------
.. deprecated:: 3.10
Python 3.9 will switch to a PEG parser (see :pep:`617`), and Python 3.10 may
include new language syntax that is not parsable by lib2to3's LL(1) parser.
The ``lib2to3`` module may be removed from the standard library in a future
Python version. Consider third-party alternatives such as `LibCST`_ or
`parso`_.
.. deprecated-removed:: 3.11 3.13
Python 3.9 switched to a PEG parser (see :pep:`617`) while lib2to3 is
using a less flexible LL(1) parser. Python 3.10 includes new language
syntax that is not parsable by lib2to3's LL(1) parser (see :pep:`634`).
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`).
It will be removed from the standard library in Python 3.13.
Consider third-party alternatives such as `LibCST`_ or `parso`_.
.. note::