'''Pluralize English nouns (stage 1)
Command line usage:
$ python3 plural.py noun
nouns
'''
import re
def plural(noun):
if re.search('[sxz]$', noun):
return re.sub('$', 'es', noun)
elif re.search('[^aeioudgkprt]h$', noun):
return re.sub('$', 'es', noun)
elif re.search('[^aeiou]y$', noun):
return re.sub('y$', 'ies', noun)
else:
return noun + 's'
if __name__ == '__main__':
import sys
if sys.argv[1:]:
print(plural(sys.argv[1]))
else:
print(__doc__)
# Copyright (c) 2009, Mark Pilgrim, All rights reserved.
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