python sys.argv[](一)

 #!/usr/bin/env python
  2 import sys
  3 def readfile(filename):
  4   f = file(filename)
  5   while True:
  6     line = f.readline()
  7     if len(line) == 0:
  8       break
  9     print line
 10   f.close()
 11 
 12 if len(sys.argv)<2:
 13   print "No action specified"
 14   sys.exit()
 15 if sys.argv[1].startswith('--'):
 16   option = sys.argv[1][2:]
 17   if option=='version':
 18     print 'version 1.2'
 19   elif option =='help':
 20     print 'this no help!sorry!!!!!!!'
 21   else:
 22     print 'Unknown option'
 23   sys.exit()
 24 else:
 25   for filename in sys.argv[1:]:
 26     readfile(filename)