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bpo-41364: Reduce import overhead of uuid module (GH-21586)

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Steve Dower 2020-07-22 12:26:37 +01:00 committed by GitHub
parent f599f9ea3c
commit a18f22ab11
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2 changed files with 10 additions and 7 deletions
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16
Lib/uuid.py
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@ -45,7 +45,6 @@ Typical usage:
"""
import os
import platform
import sys
from enum import Enum
@ -54,10 +53,13 @@ from enum import Enum
__author__ = 'Ka-Ping Yee <ping@zesty.ca>'
# The recognized platforms - known behaviors
_AIX = platform.system() == 'AIX'
_DARWIN = platform.system() == 'Darwin'
_LINUX = platform.system() == 'Linux'
_WINDOWS = platform.system() == 'Windows'
if sys.platform in ('win32', 'darwin'):
_AIX = _LINUX = False
else:
import platform
_platform_system = platform.system()
_AIX = _platform_system == 'AIX'
_LINUX = _platform_system == 'Linux'
RESERVED_NCS, RFC_4122, RESERVED_MICROSOFT, RESERVED_FUTURE = [
'reserved for NCS compatibility', 'specified in RFC 4122',
@ -688,9 +690,9 @@ def _random_getnode():
# @unittest.skipUnless(_uuid._ifconfig_getnode in _uuid._GETTERS, ...)
if _LINUX:
_OS_GETTERS = [_ip_getnode, _ifconfig_getnode]
elif _DARWIN:
elif sys.platform == 'darwin':
_OS_GETTERS = [_ifconfig_getnode, _arp_getnode, _netstat_getnode]
elif _WINDOWS:
elif sys.platform == 'win32':
_OS_GETTERS = [_netbios_getnode, _ipconfig_getnode]
elif _AIX:
_OS_GETTERS = [_netstat_getnode]

1
Misc/NEWS.d/next/Library/2020-07-21-21-45-55.bpo-41364.5O-k7A.rst Normal file
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@ -0,0 +1 @@
Reduce import overhead of :mod:`uuid`.