當前實現add_mutually_exclusive_group的()實際上並不 創建互斥組。有一個open bug來解決這個問題。
說了這麼多,你可以使用實現這一目標:
(一)subcommands
示例代碼:
# create the top-level parser
parser = argparse.ArgumentParser()
subparsers = parser.add_subparsers(help='help for subcommand')
# create the parser for the "cmd_1" command
parser_a = subparsers.add_parser('cmd_1', help='help for cmd_1')
parser_a.add_argument('-a', type=str, help='help for a')
parser_a.add_argument('-b', type=str, help='help for b')
# create the parser for the "cmd_2" command
parser_b = subparsers.add_parser('cmd_2', help='help for cmd_2')
parser_b.add_argument('-c', type=str, help='help for c')
parser.parse_args()
(二)小黑客的簡單情況像您一樣的:
ap=argparse.ArgumentParser()
# 1st group
ap.add_argument("-a", dest="value_a", help="help for a", required=False)
ap.add_argument("-b", dest="value_b", help="help for b", required=False)
# 2nd group
ap.add_argument("-c", dest="value_c", help="help for b", required=False)
args = ap.parse_args()
if (args.value_a or args.value_b):
if (args.value_a or args.value_b) and args.value_c:
print "-a and -b|-c are mutually exclusive ..."
elif not (args.value_a and args.value_b):
print "both -a and -b are required."