Mercurial > cpython-lru_cache-weakref

annotate Tools/unicode/listcodecs.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 7a5ac203154a
children 6b18a095c2e7
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1 """ List all available codec modules.
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2
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3 (c) Copyright 2005, Marc-Andre Lemburg (mal@lemburg.com).
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4
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5 Licensed to PSF under a Contributor Agreement.
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6
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7 """
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8
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9 import os, codecs, encodings
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10
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11 _debug = 0
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12
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13 def listcodecs(dir):
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14 names = []
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15 for filename in os.listdir(dir):
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16 if filename[-3:] != '.py':
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17 continue
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18 name = filename[:-3]
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19 # Check whether we've found a true codec
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20 try:
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21 codecs.lookup(name)
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22 except LookupError:
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23 # Codec not found
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24 continue
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25 except Exception, reason:
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26 # Probably an error from importing the codec; still it's
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27 # a valid code name
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28 if _debug:
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29 print '* problem importing codec %r: %s' % \
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30 (name, reason)
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31 names.append(name)
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32 return names
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33
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34
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35 if __name__ == '__main__':
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36 names = listcodecs(encodings.__path__[0])
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37 names.sort()
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38 print 'all_codecs = ['
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39 for name in names:
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40 print ' %r,' % name
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41 print ']'