mirror of https://github.com/python/cpython
gh-109653: Reduce import overhead of uuid module on Linux (#115160)
This follows in the footsteps of #21586 This speeds up import uuid by about 6ms on Linux. Before: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 20.4 ms ± 0.4 ms [User: 16.7 ms, System: 3.8 ms] Range (min … max): 19.6 ms … 21.8 ms 136 runs ``` After: ``` λ hyperfine -w 4 "./python -c 'import uuid'" Benchmark 1: ./python -c 'import uuid' Time (mean ± σ): 14.5 ms ± 0.3 ms [User: 11.5 ms, System: 3.2 ms] Range (min … max): 13.9 ms … 16.0 ms 175 runs ```
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@ -53,8 +53,11 @@ from enum import Enum, _simple_enum
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__author__ = 'Ka-Ping Yee <ping@zesty.ca>'
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# The recognized platforms - known behaviors
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if sys.platform in ('win32', 'darwin', 'emscripten', 'wasi'):
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if sys.platform in {'win32', 'darwin', 'emscripten', 'wasi'}:
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_AIX = _LINUX = False
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elif sys.platform == 'linux':
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_LINUX = True
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_AIX = False
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else:
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import platform
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_platform_system = platform.system()
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@ -0,0 +1 @@
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Improve import time of :mod:`uuid` on Linux.
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