sys.argv[]

#!/usr/bin/python
#coding=utf-8

import sys
def readfile(filename):
    ‘‘‘Print a file to the standard output.‘‘‘
    f = file(filename)
    while True:
          line = f.readline()
          if len(line) == 0:
             break
          print(line),
    f.close()

print("sys.argv[0]---------",sys.argv[0])
print("sys.argv[1]---------",sys.argv[1])
print("sys.argv[2]---------",sys.argv[2])
# Script starts from here
if len(sys.argv) < 2:
    print(‘No action specified.‘)
    sys.exit()

if sys.argv[1].startswith(‘--‘):
   option = sys.argv[1][2:]
   # fetch sys.argv[1] but without the first two characters
   if option == ‘version‘:
      print(‘Version 1.2‘)
   elif option == ‘help‘:
      print(‘‘‘"
           This program prints files to the standard output.
           Any number of files can be specified.
           Options include:
           --version : Prints the version number
           --help    : Display this help‘‘‘)
   else:
       print(‘Unknown option.‘)
       sys.exit()
else:
    for filename in sys.argv[1:]:
        readfile(filename)