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""" List all available codec modules.

Licensed to PSF under a Contributor Agreement.

"""

import os, codecs, encodings

_debug = 0

def listcodecs(dir):

names = []

for filename in os.listdir(dir):

if filename[-3:] != '.py':

continue

name = filename[:-3]

# Check whether we've found a true codec

try:

codecs.lookup(name)

except LookupError:

# Codec not found

continue

except Exception as reason:

# Probably an error from importing the codec; still it's

# a valid code name

if _debug:

print('* problem importing codec %r: %s' % \

(name, reason))

names.append(name)

return names

if __name__ == '__main__':

names = listcodecs(encodings.__path__[0])

names.sort()

print('all_codecs = [')

for name in names:

print(' %r,' % name)

print(']')