optparse 模块

from optparse import OptionParser

def cmdParse():
    MSG_USAGE = "myprog[ -f ][ -u ] arg1[,arg2..]"
    parser = OptionParser(MSG_USAGE)
    parser.add_option("-f",dest="dicPath",default=False,help="dict file path")
    parser.add_option("-u",dest="user",default=False,help="user name")
    parser.add_option("-U","--url",dest="url",default=False,help="The data post url. Like www.baidu.com")

    args_param = ["-u", "username", "-f" "current_path/test.txt", "-U", "www.baidu.com"]
    (option, args) = parser.parse_args(args_param)
    print(parser.print_help())
    print(args)
    print(option)
    print(option.dicPath, option.url, option.user)

cmdParse()

输出：

Usage: myprog[ -f ][-s ] arg1[,arg2..]

Options:
-h, --help show this help message and exit
-f DICPATH dict file path
-u USER user name
-U URL, --url=URL The data post url. Like www.baidu.com
None
[]
{'url': 'www.baidu.com', 'user': 'username', 'dicPath': 'current_path/test.txt'}
('current_path/test.txt', 'www.baidu.com', 'username')

dest是存储的变量 ----- >  option调用的变量参数

default是缺省值  ------ > 不传args_param 取默认值