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bpo-40360: Deprecate the lib2to3 package #28116

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Merged
merged 1 commit into from
Sep 2, 2021
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bpo-40360: Deprecate the lib2to3 package #28116

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3 changes: 3 additions & 0 deletions Doc/whatsnew/3.11.rst
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Expand Up @@ -276,6 +276,9 @@ Build Changes
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`.)


Removed
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2 changes: 1 addition & 1 deletion Lib/lib2to3/__init__.py
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Expand Up @@ -3,6 +3,6 @@

warnings.warn(
"lib2to3 package is deprecated and may not be able to parse Python 3.10+",
PendingDeprecationWarning,
DeprecationWarning,
stacklevel=2,
)
2 changes: 1 addition & 1 deletion Lib/test/test_lib2to3.py
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Expand Up @@ -2,7 +2,7 @@
from test.support.import_helper import import_fresh_module
from test.support.warnings_helper import check_warnings

with check_warnings(("", PendingDeprecationWarning)):
with check_warnings(("", DeprecationWarning)):
load_tests = import_fresh_module('lib2to3.tests', fresh=['lib2to3']).load_tests

if __name__ == '__main__':
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Library/2021-09-02-00-18-32.bpo-40360.9nmMtB.rst
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@@ -0,0 +1,3 @@
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). Patch
by Victor Stinner.