Mercurial > cpython-lru_cache-weakref

annotate Lib/dircache.py @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 33d4e03b23ba
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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4a23cc49e2b0 Actually, the previous batch's comment should have been different;
Guido van Rossum <guido@python.org>
parents: 11691
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1 """Read and cache directory listings.
4a23cc49e2b0 Actually, the previous batch's comment should have been different;
Guido van Rossum <guido@python.org>
parents: 11691
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2
4a23cc49e2b0 Actually, the previous batch's comment should have been different;
Guido van Rossum <guido@python.org>
parents: 11691
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3 The listdir() routine returns a sorted list of the files in a directory,
4a23cc49e2b0 Actually, the previous batch's comment should have been different;
Guido van Rossum <guido@python.org>
parents: 11691
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4 using a cache to avoid reading the directory more often than necessary.
4a23cc49e2b0 Actually, the previous batch's comment should have been different;
Guido van Rossum <guido@python.org>
parents: 11691
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5 The annotate() routine appends slashes to directories."""
46838
33d4e03b23ba Deprecate the dircache module for 3.0.
Brett Cannon <bcannon@gmail.com>
parents: 30470
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6 from warnings import warnpy3k
33d4e03b23ba Deprecate the dircache module for 3.0.
Brett Cannon <bcannon@gmail.com>
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7 warnpy3k("the dircache module has been removed in Python 3.0", stacklevel=2)
33d4e03b23ba Deprecate the dircache module for 3.0.
Brett Cannon <bcannon@gmail.com>
parents: 30470
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8 del warnpy3k
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9
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10 import os
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11
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Guido van Rossum <guido@python.org>
parents: 16070
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12 __all__ = ["listdir", "opendir", "annotate", "reset"]
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b5345e99596b added __all__ lists to a number of Python modules
Skip Montanaro <skip@pobox.com>
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13
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14 cache = {}
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15
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cd6e4bc99295 Patch by Itamar S.T. (SF#305470): add reset() method.
Guido van Rossum <guido@python.org>
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16 def reset():
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743296ce052b Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
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17 """Reset the cache completely."""
743296ce052b Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
parents: 16957
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18 global cache
743296ce052b Whitespace normalization.
Tim Peters <tim.peters@gmail.com>
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19 cache = {}
16957
cd6e4bc99295 Patch by Itamar S.T. (SF#305470): add reset() method.
Guido van Rossum <guido@python.org>
parents: 16070
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20
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Guido van Rossum <guido@python.org>
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21 def listdir(path):
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Guido van Rossum <guido@python.org>
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22 """List directory contents, using cache."""
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Guido van Rossum <guido@python.org>
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23 try:
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Guido van Rossum <guido@python.org>
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24 cached_mtime, list = cache[path]
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Guido van Rossum <guido@python.org>
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25 del cache[path]
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26 except KeyError:
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27 cached_mtime, list = -1, []
30470
1e1e685d69ef Patch #707167: Pass dircache exceptions to the caller. Fixes #682813.
Martin v. Löwis <martin@v.loewis.de>
parents: 23625
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28 mtime = os.stat(path).st_mtime
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785155e2cfca Update the code to better reflect recommended style:
Fred Drake <fdrake@acm.org>
parents: 11708
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29 if mtime != cached_mtime:
30470
1e1e685d69ef Patch #707167: Pass dircache exceptions to the caller. Fixes #682813.
Martin v. Löwis <martin@v.loewis.de>
parents: 23625
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30 list = os.listdir(path)
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Guido van Rossum <guido@python.org>
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31 list.sort()
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32 cache[path] = mtime, list
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33 return list
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34
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35 opendir = listdir # XXX backward compatibility
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36
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37 def annotate(head, list):
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Guido van Rossum <guido@python.org>
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38 """Add '/' suffixes to directories."""
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Guido van Rossum <guido@python.org>
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39 for i in range(len(list)):
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Guido van Rossum <guido@python.org>
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40 if os.path.isdir(os.path.join(head, list[i])):
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Guido van Rossum <guido@python.org>
parents: 771
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41 list[i] = list[i] + '/'