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 1085b0e475d8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1085b0e475d8 Bump version to 3.4.0 alpha 0.
Georg Brandl <georg@python.org>
parents: 77653
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1 # Generate python34stub.def out of python3.def
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2 # The regular import library cannot be used,
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3 # since it doesn't provide the right symbols for
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4 # data forwarding
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5 out = open("python34stub.def", "w")
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6 out.write('LIBRARY "python34"\n')
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7 out.write('EXPORTS\n')
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8
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9 inp = open("python3.def")
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10 line = inp.readline()
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3f14119e4af7 Issue #11626: Add _SizeT functions to stable ABI.
Martin v. Löwis <martin@v.loewis.de>
parents: 68258
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11 while line.strip().startswith(';'):
3f14119e4af7 Issue #11626: Add _SizeT functions to stable ABI.
Martin v. Löwis <martin@v.loewis.de>
parents: 68258
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12 line = inp.readline()
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parents: 68258
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13 line = inp.readline() # LIBRARY
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14 assert line.strip()=='EXPORTS'
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15
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16 for line in inp:
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parents: 77653
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17 # SYM1=python34.SYM2[ DATA]
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18 head, tail = line.split('.')
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19 if 'DATA' in tail:
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20 symbol, tail = tail.split(' ')
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21 else:
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22 symbol = tail.strip()
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23 out.write(symbol+'\n')
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24
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25 inp.close()
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26 out.close()