annotate python/example/find_str_format.py @ 829:2bfd237c4e6c

py35
author Jeff Hammel <k0scist@gmail.com>
date Sun, 19 Feb 2017 17:54:57 -0800
parents 8275fa887f2b
children
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 find str format options
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6 """
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7
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8 import argparse
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9 import os
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10 import subprocess
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11 import sys
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12
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13 __all__ = ['main']
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14
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15 def find_keys(string):
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16 retval = set()
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17 while True:
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18 try:
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19 string.format(**{i:'' for i in retval})
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20 return retval
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21 except KeyError as e:
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22 retval.add(e.message)
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23
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25 def main(args=sys.argv[1:]):
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26
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27 string = ' '.join(args)
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28 keys = find_keys(string)
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29 print ('\n'.join(sorted(keys)))
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30
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31 if __name__ == '__main__':
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32 main()