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gh-82907: Document mtime=0 for reproducible tarfile gzip output (GH-150269)

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Omkar Kabde 2026-05-23 02:32:56 +05:30 • committed by GitHub
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Doc/library/tarfile.rst
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@ -144,7 +144,9 @@ Some facts and figures:
For modes ``'w:gz'`` and ``'w|gz'``, :func:`tarfile.open` accepts the
keyword argument *mtime* to create a gzip archive header with that mtime. By
default, the mtime is set to the time of creation of the archive.
default, the mtime is set to the time of creation of the archive. Use
*mtime* ``0`` to generate a compressed stream that does not depend on
creation time, for reproducible output.
For special purposes, there is a second format for *mode*:
``'filemode|[compression]'``. :func:`tarfile.open` will return a :class:`TarFile`