[3.13] gh-126565: Skip zipfile.Path.exists check in write mode (GH-126576)
#126642
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…onGH-126576) When `zipfile.Path.open` is called, the implementation will check whether the path already exists in the ZIP file. However, this check is only required when the ZIP file is in read mode. By swapping arguments of the `and` operator, the short-circuiting will prevent the check from being run in write mode. This change will improve the performance of `open()`, because checking whether a file exists is slow in write mode, especially when the archive has many members. (cherry picked from commit 160758a) Co-authored-by: Jan Hicken <janhicken@users.noreply.github.com>
This was referenced Nov 10, 2024
jaraco
approved these changes
Nov 10, 2024
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When
zipfile.Path.openis called, the implementation will checkwhether the path already exists in the ZIP file. However, this check is
only required when the ZIP file is in read mode. By swapping arguments
of the
andoperator, the short-circuiting will prevent the check frombeing run in write mode.
This change will improve the performance of
open(), because checkingwhether a file exists is slow in write mode, especially when the archive
has many members.
(cherry picked from commit 160758a)
Co-authored-by: Jan Hicken janhicken@users.noreply.github.com