learn-python/sys_argv.py at master · cscis/learn-python · GitHub

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# encoding:utf-8

# !/usr/bin/env python

# -*- Python3命令行 -*-

import optparse

import sys

import webbrowser

def process_command_line(argv):

"""

Return a 2-tuple: (settings object, args list).

`argv` is a list of arguments, or `None` for ``sys.argv[1:]``.

"""

if argv is None:

argv = sys.argv[1:]

# initialize the parser object:

parser = optparse.OptionParser(

formatter=optparse.TitledHelpFormatter(width=78),

add_help_option=None)

# define options here:

parser.add_option( # customized description; put --help last

'-h', '--help', action='help', help='Show this help message and exit.'

)

parser.add_option(

'-u', '--url', action='store', dest = 'link', help='Open a link.'

)

parser.add_option(

'-v', '--version', action='store_true', help='Show version.'

)

parser.add_option(

'-q', '--quit', action='store_false',help='Quit'

)

settings, args = parser.parse_args(argv)

# check number of arguments, verify values, etc.:

if args:

parser.error('program takes no command-line arguments; '

'"%s" ignored.' % (args,))

# further process settings & args if necessary

return settings, args

def main(argv=None):

settings, args = process_command_line(argv)

print(settings)

# application code here, like:

run(settings, args)

return 0 # success

def run(settings, args):

if settings.link:

webbrowser.open(settings.link, 1)

if settings.version:

print('VERSION 1.0')

if __name__ == '__main__':

status = main()

sys.exit(status)

"""

命令行功能：

python sys_argv.py -h

显示帮助信息

python sys_argv.py -v

显示版本号

python sys_argv.py -u www.163.com

用默认浏览器打开你输入的网址

action四种参数：

help 显示帮助信息

store 需要参数值

store_true 不需要参数值，默认True

store_false 不需要参数值，默认False

"""

learn-python/sys_argv.py at master · cscis/learn-python · GitHub

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