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gh-78889: Stop IDLE Shell freezes from sys.stdout.shell.xyz (#121876)

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Problem occurred when attribute xyz could not be pickled.
Since this is not trivial to selectively fix, block all
attributes (other than 'width').  IDLE does not access them
and they are private implementation details.
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Terry Jan Reedy 2024-07-17 09:33:33 -04:00 • committed by GitHub
parent 6682d91678
commit 58753f33e4
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3
Lib/idlelib/News3.txt
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@ -4,6 +4,9 @@ Released on 2024-10-xx
========================= =========================
gh-78889: Stop Shell freezes by blocking user access to non-method
sys.stdout.shell attributes, which are all private.
gh-78955: Use user-selected color theme for Help => IDLE Doc. gh-78955: Use user-selected color theme for Help => IDLE Doc.
gh-96905: In idlelib code, stop redefining built-ins 'dict' and 'object'. gh-96905: In idlelib code, stop redefining built-ins 'dict' and 'object'.

3
Lib/idlelib/run.py
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@ -443,6 +443,9 @@ class StdioFile(io.TextIOBase):
def __init__(self, shell, tags, encoding='utf-8', errors='strict'): def __init__(self, shell, tags, encoding='utf-8', errors='strict'):
self.shell = shell self.shell = shell
# GH-78889: accessing unpickleable attributes freezes Shell.
# IDLE only needs methods; allow 'width' for possible use.
self.shell._RPCProxy__attributes = {'width': 1}
self.tags = tags self.tags = tags
self._encoding = encoding self._encoding = encoding
self._errors = errors self._errors = errors

2
Misc/NEWS.d/next/IDLE/2024-07-16-16-57-03.gh-issue-78889.U7ghFD.rst Normal file
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@ -0,0 +1,2 @@
Stop Shell freezes by blocking user access to non-method sys.stdout.shell attributes,
which are all private.