Re: python 写命令行程序

copy一段我的，
    try:
        opts, args = getopt.getopt(sys.argv[1:], "hs:t:b:", ["help",
"site=","build=","type="])
        #支持长选项和短选项两个方式,之所短的： "hs:t:b:"表示-h是开关类型的选项，-s,-t,-t是需要提供额外的值。
       #比如： cmd.py -s www.google.com -t homepage -b other_args 或者
       #cmd.py -h 或者 cmd.py --help
       #opts包含(opt,value)这样的选项和值
      #args包含参数列表
    except getopt.GetoptError, err:
        # print help information and exit:
        print str(err) # will print something like "option -a not recognized"
        usage()
        sys.exit(2)
    for o, a in opts:
        if o in ("-h", "--help"):
            usage()
            sys.exit()
        elif o in ("-o", "--output"):
            output = a
        elif o in ("-s","--site") :
            site_alias = a
        elif o in ("-t","--type"):
            build_type = a
        elif o in ("-b","--build"):
            build_number = a
        else:
            assert False, "unhandled option"

        # ...
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