Python中的sys.argv[]用法

#!/usr/bin/python # -*- coding:utf-8 -*- import sys

def readFile(filename):     f = file(filename)     while True:         fileContext = f.readline()         if len(fileContext) ==0:             break;         print fileContext     f.close()

if len(sys.argv) < 2:     print "No function be setted."     sys.exit() if sys.argv[1].startswith("-"):     option = sys.argv[1][1:]     if option == 'version':         print "Version1.2"     elif option == 'help':         print "enter an filename to see the context of it!"     else:         print "Unknown function!"         sys.exit() else:     for filename in sys.argv[1:]:         readFile(filename)