Mercurial > cpython-lru_cache-weakref

annotate Lib/test/subprocessdata/qgrep.py @ 87690:66c1c9f32567 default tip

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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 de05d846795e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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66868
de05d846795e issue7213: Open the pipes used by subprocesses with the FD_CLOEXEC flag from
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parents:
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1 """When called with a single argument, simulated fgrep with a single
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2 argument and no options."""
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3
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4 import sys
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5
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6 if __name__ == "__main__":
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7 pattern = sys.argv[1]
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8 for line in sys.stdin:
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9 if pattern in line:
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10 sys.stdout.write(line)