optparse 模块

optparse是Python自带的模块，无需安装。

#!/usr/bin/env python
# coding: utf-8

from optparse import OptionParser

usage = 'usage: %prog -f <filename> -i <ip address>'
parser = OptionParser(usage = usage)
parser.add_option('-f', '--file', type = 'string', dest = 'filename', help = 'which file')
parser.add_option('-i', '--ip', type = 'int', dest = 'address', help = 'which host')
(options, args) = parser.parse_args()

print str(options)
print str(args)

$ python opt.py -h
Usage: opt.py -f <filename> -i <ip address>

Options:
  -h, --help            show this help message and exit
  -f FILENAME, --file=FILENAME
                        which file
  -i ADDRESS, --ip=ADDRESS
                        which host
$ python opt.py --file gps.txt -i 10