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Title: gh-133998: Fix gzip file creation when time is out of range by adang1345 · Pull Request #134278 · python/cpython · GitHub

Open Graph Title: gh-133998: Fix gzip file creation when time is out of range by adang1345 · Pull Request #134278 · python/cpython

X Title: gh-133998: Fix gzip file creation when time is out of range by adang1345 · Pull Request #134278 · python/cpython

Description: If the system clock is set so that time.time() falls outside of the range 0 through 2**32-1, then creation of a GZIP-compressed file using gzip.GzipFile() would fail with the exception struct.error: 'L' format requires 0 <= number <= 4294967295. Fix this error. If the mtime argument to gzip.GzipFile() is explicitly set to an out-of-range value, then the behavior is unchanged, and we continue raising the exception. Issue: gh-133998 📚 Documentation preview 📚: https://cpython-previews--134278.org.readthedocs.build/

Open Graph Description: If the system clock is set so that time.time() falls outside of the range 0 through 2**32-1, then creation of a GZIP-compressed file using gzip.GzipFile() would fail with the exception struct.error...

X Description: If the system clock is set so that time.time() falls outside of the range 0 through 2**32-1, then creation of a GZIP-compressed file using gzip.GzipFile() would fail with the exception struct.error...

Opengraph URL: https://github.com/python/cpython/pull/134278

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64681af gh-133998: Fix gzip file creation when time is out of range adang1345 May 19, 2025 https://github.com/python/cpython/pull/134278/commits/64681af6c69ec52a76ef64877ae56851ccab5f8e
3241cf2 📜🤖 Added by blurb_it. blurb-it[bot] May 19, 2025 https://github.com/python/cpython/pull/134278/commits/3241cf27b0ffae5843687d088f174c215603ab0f
79d8a72 Remove extra newline adang1345 May 19, 2025 https://github.com/python/cpython/pull/134278/commits/79d8a72dd72651ba110d3c0bfa59f902e55b18fa
e701310 Address review comments regarding documentation adang1345 May 21, 2025 https://github.com/python/cpython/pull/134278/commits/e701310c970ec9e723cc173f0001f34fc657e90f
90a881b Keep docstring in line with documentation adang1345 May 21, 2025 https://github.com/python/cpython/pull/134278/commits/90a881b888f7939fc8d9655285b44764ef6b861f
9638ca0 Improve error message when mtime is out of range adang1345 May 21, 2025 https://github.com/python/cpython/pull/134278/commits/9638ca0fe5339ba2d7611d26e56e936f4ae4ba7e
20da98a Re-format changelog message adang1345 May 21, 2025 https://github.com/python/cpython/pull/134278/commits/20da98ae35facbbd12d7e567b413ed0217fda7ce
79686b9 Merge branch 'main' into fix-gzip-mtime serhiy-storchaka May 21, 2026 https://github.com/python/cpython/pull/134278/commits/79686b98eda3f270168c0a9a0dd8c7492a3caed4
ff424fc Reset out-of-range mtime to 0 even if explicitly provided. serhiy-storchaka May 21, 2026 https://github.com/python/cpython/pull/134278/commits/ff424fca93fc557b6d330ab36ae4a650e98f6473
52acf9e Fix also gzip.compress(). serhiy-storchaka May 21, 2026 https://github.com/python/cpython/pull/134278/commits/52acf9e3dbcbc2d8add5ba08a64c4221666c1a88
e4e7d53 Update docs. serhiy-storchaka May 21, 2026 https://github.com/python/cpython/pull/134278/commits/e4e7d535e8078321cd6bb3ff5c4e8e13897e7be7
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