Mercurial > cpython-lru_cache-weakref

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 6cfe2982de42
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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fcfe324663a6 convert shebang lines: python -> python3
Benjamin Peterson <benjamin@python.org>
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1 #! /usr/bin/env python3
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Guido van Rossum <guido@python.org>
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2
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Guido van Rossum <guido@python.org>
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3 # Copy one file's atime and mtime to another
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4
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5 import sys
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bfc655074523 posix -> os
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6 import os
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7 from stat import ST_ATIME, ST_MTIME # Really constants 7 and 8
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8
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9 def main():
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893a4dc17a91 Ran 2to3 over scripts directory.
Georg Brandl <georg@python.org>
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10 if len(sys.argv) != 3:
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Tim Peters <tim.peters@gmail.com>
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11 sys.stderr.write('usage: copytime source destination\n')
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Tim Peters <tim.peters@gmail.com>
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12 sys.exit(2)
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Tim Peters <tim.peters@gmail.com>
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13 file1, file2 = sys.argv[1], sys.argv[2]
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Tim Peters <tim.peters@gmail.com>
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14 try:
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Tim Peters <tim.peters@gmail.com>
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15 stat1 = os.stat(file1)
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6cfe2982de42 Use OESeeror instead of os.error (#16720)
Andrew Svetlov <andrew.svetlov@gmail.com>
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16 except OSError:
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Tim Peters <tim.peters@gmail.com>
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17 sys.stderr.write(file1 + ': cannot stat\n')
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18 sys.exit(1)
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Tim Peters <tim.peters@gmail.com>
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19 try:
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Tim Peters <tim.peters@gmail.com>
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20 os.utime(file2, (stat1[ST_ATIME], stat1[ST_MTIME]))
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Andrew Svetlov <andrew.svetlov@gmail.com>
parents: 59522
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21 except OSError:
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Tim Peters <tim.peters@gmail.com>
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22 sys.stderr.write(file2 + ': cannot change time\n')
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Tim Peters <tim.peters@gmail.com>
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23 sys.exit(2)
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Guido van Rossum <guido@python.org>
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24
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981fff7363b9 [Patch #1005491 ] use __name__ == '__main__' in scripts
Andrew M. Kuchling <amk@amk.ca>
parents: 15930
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25 if __name__ == '__main__':
981fff7363b9 [Patch #1005491 ] use __name__ == '__main__' in scripts
Andrew M. Kuchling <amk@amk.ca>
parents: 15930
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26 main()