OptParse is a module introduced in Python2.3 that makes it easy to write command line tools. See "Option parsing tools" for others. Note that OptParse is considered deprecated (in Python 2.7 and 3.2) in favor of the argparse module.

You give a description of the options that the program can receive, and OptParse will do reasonable stuff for you.

For example:

   1 import optparse
   3 if __name__=="__main__":
   4     parser = optparse.OptionParser("usage: %prog [options] arg1 arg2")
   5     parser.add_option("-H", "--host", dest="hostname",
   6                       default="", type="string",
   7                       help="specify hostname to run on")
   8     parser.add_option("-p", "--port", dest="portnum", default=80,
   9                       type="int", help="port number to run on")
  11     (options, args) = parser.parse_args()
  12     if len(args) != 2:
  13         parser.error("incorrect number of arguments")
  14     hostname = options.hostname
  15     portnum = options.portnum

args contains your fixed arguments, options contains your values.

For example, options.portnum would contain the integer 80, in the example above.



OptParse (last edited 2019-09-12 18:41:55 by MatsWichmann)

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