我需要的是:
pro [-a xxx | [-b yyy -c zzz]]
我尝试了这个,但是没有用。有人可以帮我吗?
group= parser.add_argument_group('Model 2') group_ex = group.add_mutually_exclusive_group() group_ex.add_argument("-a", type=str, action = "store", default = "", help="test") group_ex_2 = group_ex.add_argument_group("option 2") group_ex_2.add_argument("-b", type=str, action = "store", default = "", help="test") group_ex_2.add_argument("-c", type=str, action = "store", default = "", help="test")
谢谢!
add_mutually_exclusive_group不会使整个组互斥。它使组内的选项互斥。
add_mutually_exclusive_group
您正在寻找的是子命令。而不是编[-a xxxx | [-b yyy -c zzz]],您将拥有:
prog command 1 -a: ... command 2 -b: ... -c: ...
要使用第一组参数进行调用:
prog command_1 -a xxxx
要使用第二组参数进行调用:
prog command_2 -b yyyy -c zzzz
您还可以将子命令参数设置为位置。
prog command_1 xxxx
有点像git或svn:
git commit -am git merge develop
# create the top-level parser parser = argparse.ArgumentParser(prog='PROG') parser.add_argument('--foo', action='store_true', help='help for foo arg.') subparsers = parser.add_subparsers(help='help for subcommand') # create the parser for the "command_1" command parser_a = subparsers.add_parser('command_1', help='command_1 help') parser_a.add_argument('a', type=str, help='help for bar, positional') # create the parser for the "command_2" command parser_b = subparsers.add_parser('command_2', help='help for command_2') parser_b.add_argument('-b', type=str, help='help for b') parser_b.add_argument('-c', type=str, action='store', default='', help='test')
>>> parser.print_help() usage: PROG [-h] [--foo] {command_1,command_2} ... positional arguments: {command_1,command_2} help for subcommand command_1 command_1 help command_2 help for command_2 optional arguments: -h, --help show this help message and exit --foo help for foo arg. >>> >>> parser.parse_args(['command_1', 'working']) Namespace(a='working', foo=False) >>> parser.parse_args(['command_1', 'wellness', '-b x']) usage: PROG [-h] [--foo] {command_1,command_2} ... PROG: error: unrecognized arguments: -b x
祝好运。