Python---optparse module

Then a log, http://zidingyi.blog.51cto.com/10735263/1873566

First, let's see what Parse_args () is returning. He returned two values. One is options, one is args!

#!/usr/bin/env python#coding:utf-8# statistical import sys, osfrom optparse import  of standard inputs Optionparserdef opt ():    usage =  "usage: %prog [options]  Arg1 arg2 "    parser = optionparser ()     parser.add_ Option ("-C",  "--char",                     dest= "Chars",                     action= "Store_true",                     default=false,                      help= "Only count chars")     parser.add_option ("-W",  "--word",                     dest= "Words",                      action= "Store_true",                     default=False,                     help= "Only count words")      parser.add_option ("-L",  "--line",                     dest= "Lines",                     action= "Store_true",                      default=false,                     help= "Only count lines")     parser.add_option ("-N",  "-- Nototal ",                     dest= "Nototal",                     action= "Store_true",                     default=False,                      help= "Nototal")     options, args = parser.parse_args ()      return options, args     opt () print sys.argv[:]     //Print out the script runtime parameters, note and parse_aRGS returns the parameters to do contrast options, args = opt () print options, args    //Print out parse The value of the args returned by _args.

Run to perform a bit:

[[email protected] socket]# python 1.py-l/etc/passwd[' 1.py ', '-l ', '/etc/passwd ']//sys.argv return the parameter {' chars ': False, ' Lines ': True, ' nototal ': false, ' words ': false} ['/etc/passwd ']//the previous dictionary returns the value of the options, followed by parentheses for the returned Parse_args parameter value, Note that this value is not the same as the parameter value returned by the SYS module.

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Python---optparse module