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bpo-40360: Prepare to deprecate lib2to3. #19645

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bpo-40360: Prepare to deprecate lib2to3. #19645

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bpo-40360: Prepare to deprecate lib2to3.
gpshead Apr 22, 2020
ee7c448
NEWS
gpshead Apr 22, 2020
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11 changes: 11 additions & 0 deletions Doc/library/2to3.rst
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@@ -3,6 +3,12 @@
2to3 - Automated Python 2 to 3 code translation
===============================================

.. deprecated:: 3.9
The :mod:`lib2to3` package and related 2to3 tool are pending deprecation
and removal by Python 3.11 or 3.12. We anticipate that a fork of it may
live on as an external package on PyPI as it does have use as a Python to
Python source transformation tool.

.. sectionauthor:: Benjamin Peterson <benjamin@python.org>

2to3 is a Python program that reads Python 2.x source code and applies a series
@@ -462,6 +468,11 @@ and off individually. They are described here in more detail.
.. moduleauthor:: Collin Winter
.. moduleauthor:: Benjamin Peterson <benjamin@python.org>

.. deprecated:: 3.9
The :mod:`lib2to3` package and related 2to3 tool are pending deprecation
and removal by Python 3.11 or 3.12. We anticipate that a fork of it may
live on as an external package on PyPI.

**Source code:** :source:`Lib/lib2to3/`

--------------
6 changes: 5 additions & 1 deletion Lib/lib2to3/__init__.py
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@@ -1 +1,5 @@
#empty
import warnings
warnings.warn(
"lib2to3 is pending deprecation for removal in Python 3.11 or 3.12.",
category=PendingDeprecationWarning)
del warnings
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2020-04-21-22-04-57.bpo-40360.qCpoH8.rst
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lib2to3 and the 2to3 tool gain a PendingDeprecationWarning, slated for
removal in 3.11 or 3.12.