#!/usr/bin/env python

# Fix Python script(s) to reference the interpreter via /usr/bin/env python.
# Warning: this overwrites the file without making a backup.

import sys
import re


def main():
   for filename in sys.argv[1:]:
       try:
           f = open(filename, 'r')
       except IOError, msg:
           print filename, ': can\'t open :', msg
           continue
       line = f.readline()
       if not re.match('^#! */usr/local/bin/python', line):
           print filename, ': not a /usr/local/bin/python script'
           f.close()
           continue
       rest = f.read()
       f.close()
       line = re.sub('/usr/local/bin/python',
                     '/usr/bin/env python', line)
       print filename, ':', repr(line)
       f = open(filename, "w")
       f.write(line)
       f.write(rest)
       f.close()

if __name__ == '__main__':
   main()