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Title: [3.14] gh-145743: Fix inconsistency after calling Struct.__init__() with invalid format (GH-145744) by miss-islington · Pull Request #145763 · python/cpython · GitHub

Open Graph Title: [3.14] gh-145743: Fix inconsistency after calling Struct.__init__() with invalid format (GH-145744) by miss-islington · Pull Request #145763 · python/cpython

X Title: [3.14] gh-145743: Fix inconsistency after calling Struct.__init__() with invalid format (GH-145744) by miss-islington · Pull Request #145763 · python/cpython

Description: Only set the format attribute after successful (re-)initialization. (cherry picked from commit 3f33bf8) Co-authored-by: Serhiy Storchaka storchaka@gmail.com Issue: gh-145743

Open Graph Description: Only set the format attribute after successful (re-)initialization. (cherry picked from commit 3f33bf8) Co-authored-by: Serhiy Storchaka storchaka@gmail.com Issue: gh-145743

X Description: Only set the format attribute after successful (re-)initialization. (cherry picked from commit 3f33bf8) Co-authored-by: Serhiy Storchaka storchaka@gmail.com Issue: gh-145743

Opengraph URL: https://github.com/python/cpython/pull/145763

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6ab0473 gh-145743: Fix inconsistency after calling Struct.__init__() with inv… serhiy-storchaka Mar 10, 2026 https://github.com/python/cpython/pull/145763/commits/6ab04737ef9abf5f867b46070ae80c508d9d54d5
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