optparse 模块

optparse模块主要用来为脚本传递命令参数，采用预先定义好的选项来解析命令行参数。

首先需引入optparser模块 => 然后执行初始化 =>实例化一个OptionParser对象(可以带参，也可以不带参数) =>再为命令行添加选项

官方文档

 1 """A powerful, extensible, and easy-to-use option parser. By Greg Ward <gward@python.net>
 2 
 3 Originally distributed as Optik.
 4 
 5 For support, use the optik-users@lists.sourceforge.net mailing list
 6 (http://lists.sourceforge.net/lists/listinfo/optik-users).
 7 
 8 Simple usage example:
 9 
10    from optparse import OptionParser
11 
12    parser = OptionParser()
13    parser.add_option("-f", "--file", dest="filename",
14                      help="write report to FILE", metavar="FILE")
15    parser.add_option("-q", "--quiet",
16                      action="store_false", dest="verbose", default=True,
17                      help="don't print status messages to stdout")
18 
19    (options, args) = parser.parse_args()
20 """

View Code

完整的例子：

 1     from optparse import OptionParser  
 2     [...]  
 3     def main():  
 4         usage = "usage: %prog [options] arg"  
 5         parser = OptionParser(usage)  
 6         parser.add_option("-f", "--file", dest="filename",  
 7                           help="read data from FILENAME")  
 8         parser.add_option("-v", "--verbose",  
 9                           action="store_true", dest="verbose")  
10         parser.add_option("-q", "--quiet",  
11                           action="store_false", dest="verbose")  
12         [...]  
13         (options, args) = parser.parse_args()  
14         if len(args) != 1:  
15             parser.error("incorrect number of arguments")  
16         if options.verbose:  
17             print "reading %s..." % options.filename  
18         [...]  
19       
20     if __name__ == "__main__":  
21         main()

[其它参考]

https://www.cnblogs.com/captain_jack/archive/2011/01/11/1933366.html