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Title: gh-132762: Fix underallocation bug in dict.fromkeys() and expand test coverage by angela-tarantula · Pull Request #133627 · python/cpython · GitHub

Open Graph Title: gh-132762: Fix underallocation bug in dict.fromkeys() and expand test coverage by angela-tarantula · Pull Request #133627 · python/cpython

X Title: gh-132762: Fix underallocation bug in dict.fromkeys() and expand test coverage by angela-tarantula · Pull Request #133627 · python/cpython

Description: The Python programming language. Contribute to python/cpython development by creating an account on GitHub.

Open Graph Description: Closes #132762 Summary dict_set_fromkeys() was only sizing its new table by the size of the iterable input, ignoring any existing entries in the dictionary. This triggered an infinite loop in dictr...

X Description: Closes #132762 Summary dict_set_fromkeys() was only sizing its new table by the size of the iterable input, ignoring any existing entries in the dictionary. This triggered an infinite loop in dictr...

Opengraph URL: https://github.com/python/cpython/pull/133627

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og:image:altCloses #132762 Summary dict_set_fromkeys() was only sizing its new table by the size of the iterable input, ignoring any existing entries in the dictionary. This triggered an infinite loop in dictr...
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gh-132762: Fix underallocation bug in dict.fromkeys() and expand test coveragehttps://github.com/python/cpython/pull/133627/commits#top
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dict_set_fromkeys now properly calculates new_sizehttps://github.com/python/cpython/pull/133627/commits/7aa40345961b55f00ee20968f573a3c89968dc3c
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modified a fromkeys() test to cover edge case where input is large sethttps://github.com/python/cpython/pull/133627/commits/5717052bd37b535c631037f18cb3d8fb45a56d73
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