best getopt exmaple

getopt_prac.py

#!/bin/env python
#coding:utf-8
#
 
import getopt,sys
 
def usage():
    """
The output  configuration file contents.
 
Usage: config.py [-d|--domain,[number|'m']] [-c|--cache,[allow|deny]] [-h|--help] [-v|--version] [output, =[argument]]
 
Description
            -d,--domain Generate domain configuration,take 13 or 19 number,"m" is the second - tier cities.
            -c,--cache  Configure cache policy. "allow" or "deny".
            -h,--help    Display help information.
            -v,--version  Display version number.
for example:
    python config.py -d 13
    python config.py -c allow
    python config.py -h
    python config.py -d 13 -c allow
"""
 
def getopttest():
    try:
        options,args = getopt.getopt(sys.argv[1:],"d:c:hv",["domain=","cache=","help","version"])
    except getopt.GetoptError as err:
        print str(err)
      print usage.__doc__
      sys.exit(1)
    for o,a in options:
    #for b in args: # Value other than args agruments for getopt format.
 
       if o in ("-d","--domain") and a in ("13"):
          ttt.domain(int(a))
      elif o in ("-d","--domain") and a in ("19"):
        ttt.domain(int(a))
      elif o in ("-c","--cache") and a in ("allow"):
        ttt.cache("allow")
      elif o in ("-h","--help"):
          print usage.__doc__
        sys.exit()
      elif o in ("-v","--version"):
          version = xxx
      else:
           print "Using the wrong way,please view the help information."
if __name__ == "__main__":
    getopttest()