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Merge branch 'master' of https://github.com/tanteng/learn-python 
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‎README.md‎

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# learn-python
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本人边学习Python3，边把一些小脚本（自己写的和网上找的）经过本机测试后然后同步到github上，供初学者下载研究，欢迎fork，也欢迎提交新的Python小脚本，特别是一些有趣好玩的小程序！
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本人边学习Python3，边把一些小脚本（自己写的和网上找的）经过本机测试后然后同步到github上，供初学者下载研究，欢迎fork，也欢迎提交新的Python小脚本，特别是一些有趣好玩的小程序！有什么问题可以通过Issues讨论，喜欢的话点Star或分享给别人哦！
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学习Python3记录博客：
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http://www.tantengvip.com/category/develop/python3/

‎args_kwargs.py‎

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# encoding:utf-8
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# -*- Python3可变参数 -*-
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import webbrowser
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def alias(*args, **kwargs):
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print('args=', args)
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print('kwargs=', kwargs)
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alias(3, 23, 3, 3,a='hello',b=3,c='C')
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'''输出
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"""
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输出：
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args= (3, 23, 3, 3)
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kwargs= {'b': 3, 'c': 'C', 'a': 'hello'}
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'''
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小结：
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*args表示任何多个无名参数，它是一个tuple
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**kwargs表示关键字参数，它是一个dict
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"""
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# 具体参考资料
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webbrowser.open('http://www.tantengvip.com/2015/07/python-args-kwargs/', 1)

‎sys_argv.py‎

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# encoding:utf-8
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# !/usr/bin/env python
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# -*- Python3命令行 -*-
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import optparse
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import sys
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import webbrowser
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def process_command_line(argv):
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"""
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Return a 2-tuple: (settings object, args list).
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`argv` is a list of arguments, or `None` for ``sys.argv[1:]``.
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"""
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if argv is None:
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argv = sys.argv[1:]
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# initialize the parser object:
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parser = optparse.OptionParser(
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formatter=optparse.TitledHelpFormatter(width=78),
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add_help_option=None)
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# define options here:
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parser.add_option( # customized description; put --help last
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'-h', '--help', action='help', help='Show this help message and exit.'
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)
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parser.add_option(
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'-u', '--url', action='store', dest = 'link', help='Open a link.'
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)
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parser.add_option(
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'-v', '--version', action='store_true', help='Show version.'
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)
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parser.add_option(
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'-q', '--quit', action='store_false',help='Quit'
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)
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settings, args = parser.parse_args(argv)
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# check number of arguments, verify values, etc.:
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if args:
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parser.error('program takes no command-line arguments; '
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'"%s" ignored.' % (args,))
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# further process settings & args if necessary
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return settings, args
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def main(argv=None):
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settings, args = process_command_line(argv)
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print(settings)
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# application code here, like:
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run(settings, args)
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return 0 # success
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def run(settings, args):
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if settings.link:
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webbrowser.open(settings.link, 1)
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if settings.version:
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print('VERSION 1.0')
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# sys.argv接收参数，第一个参数是文件名，第二个参数开始是用户输入的参数，以空格隔开
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def run1():
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print('I\'m action1')
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if __name__ == '__main__':
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status = main()
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sys.exit(status)
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"""
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命令行功能：
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def run2():
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print('I\'m action2')
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python sys_argv.py -h
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显示帮助信息
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python sys_argv.py -v
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显示版本号
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if 2 > len(sys.argv):
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print('none')
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else:
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action1 = sys.argv[1]
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action2 = sys.argv[2]
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python sys_argv.py -u www.163.com
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用默认浏览器打开你输入的网址
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if 'run1' == action1:
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run1()
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if 'run2' == action2:
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run2()
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#用法：在命令行执行脚本，python sys_argv.py run1 run2
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action四种参数：
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help 显示帮助信息
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store 需要参数值
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store_true 不需要参数值，默认True
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store_false 不需要参数值，默认False
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"""

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