argparse sample

myargparse.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
import argparse
import sys

class MyArgParse(object):
    def __init__(self):
        pass

    def sum(self):
        print "sum sum"

    def set_option(self):
        self.parser = argparse.ArgumentParser(description='test argparse')
        self.parser.add_argument('integers', metavar='N', type=int, nargs='+', help='test option 1')
        self.parser.add_argument('--sum', dest='accumulate', action='store_const', const=sum, default=max, help='test option2')
        self.parser.add_argument('-a', help='no options. one extra argument is required. it simply conains integer')
        self.parser.add_argument('-b', action='store_const', const=100, help="action='store_const'. no argument is needed. b will contain const(100 is set)")
        self.parser.add_argument('-c', action='store_true', help="action='store_true'. no argument is needed. c will be set to true. if you need to set false, use store_false")
        self.parser.add_argument('-d', action='append', help="action='append'. put all arguments into list. you can specify this option any times")
        self.parser.add_argument('-e', action='append_const', const='10',  help="action='append_const' put const value into list every time you specify this option. you can use '-eee' like format to set this option multiple times")
        self.parser.add_argument('--version', action='version', version='%(prog)s 1.0', help="action='version'. just show version and exit")
        self.parser.add_argument('-f', nargs=3, help="nargs=3. you should give 3 arguments for this option")
        self.parser.add_argument('-g', nargs='?', const='201', default='200', help="nargs='?'. if no optional options are specified, default value will be set. if only -g is specifed, const value will be set")
        self.parser.add_argument('-i', nargs='*', help="nargs=*. all arguments are put into a list")
        self.parser.add_argument('foo', type=int, help="type=int.")

    def print_args(self):
        args = self.parser.parse_args()
        print sys.argv
        print args
        print args.accumulate(args.integers)
        print("a = " + str(args.a))
        print("b = " + str(args.b))
        print("c = " + str(args.c))
        print("d = " + str(args.d))
        print("e = " + str(args.e))
        print("f = " + str(args.f))
        print("g = " + str(args.g))
        print("i = " + str(args.i))
        print("foo + 10 = " + str(args.foo + 10))


if __name__=='__main__':
    myap = MyArgParse()
    myap.set_option()
    myap.print_args()