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GeezerVison is showing github.com — gh-159323: PyREPL on Windows should exit when STDIN is NUL by edvilme · Pull Request #159368 · python/cpython

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@edvilme

@edvilme edvilme commented Oct 13, 2026 •
edited by bedevere-app Bot
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On Windows, when stdin is NUL, starting the REPL results on an exception loop because it is not caught by os.isatty

  • Issue: Windows: new REPL loops forever on OSError from getheightwidth when stdin is NUL and output is redirected #159323

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@edvilme
pythongh-159323: PyREPL on Windows should exit when STDIN is NUL
0d2ff21 
On Windows, when stdin is `NUL`, starting the REPL results on an
exception loop because it is not caught by `os.isatty`
@bedevere-app bedevere-app Bot mentioned this pull request Oct 13, 2026
Windows: new REPL loops forever on OSError from getheightwidth when stdin is NUL and output is redirected #159323
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edvilme
edvilme commented Oct 13, 2026
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Comment thread Lib/_pyrepl/readline.py Resolved

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edvilme and others added 2 commits October 13, 2026 11:05
@edvilme
Move fix to main.py
378c2c7
@blurb-it
📜🤖 Added by blurb_it.
bb0d950
@edvilme
edvilme marked this pull request as ready for review October 13, 2026 21:58
@edvilme
edvilme requested review from ambv, lysnikolaou and pablogsal as code owners October 13, 2026 21:58
@bedevere-app bedevere-app Bot added the awaiting review label Oct 13, 2026
@GabrieleBattaglia GabrieleBattaglia mentioned this pull request Nov 4, 2026
[Bug] Windows: killing background Bash task leaves pyenv-win python.exe orphaned, output file grows unbounded anthropics/claude-code#101456
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@pablogsal pablogsal Awaiting requested review from pablogsal pablogsal is a code owner
@lysnikolaou lysnikolaou Awaiting requested review from lysnikolaou lysnikolaou is a code owner
@ambv ambv Awaiting requested review from ambv ambv is a code owner

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@edvilme
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