ArgParse 模块想要在单个命令中使用两个参数

Question

我正在尝试将 python 中的 argparse 模块用于我正在编写的脚本，我希望能够在我的命令中使用多个标志并存储这些变量。这是我目前所拥有的。

parser = argparse.ArgumentParser(
                 description='This program allows for you to create a User in AD and add that User to a specific AD Group',
                 epilog='Note: In order to run this script you must have login credentials of an AD admin. \
                 You must also know the username, if you intend to search for users, or the group name if intending to search for group. \
                 The logging level is set to info by default.')

parser.add_argument('--listuser', nargs=?, default='None', type=str,help='Lists attributes for a given user. Example: "--listuser --username <AD username(s)> "')
    parser.add_argument('--listusergroups', nargs=?, default='None', type=str, help='Lists the groups a user is associated with attributes for a given user. Example: "--listusergroups < AD username(s)>"')
    parser.add_argument('--listgroupmembers', nargs=?, default='None', type=str,help='Lists the members of a given group. Example: "--listgroupmembers --groups <group(s)>"')
    parser.add_argument('--addgroupmembers', nargs=?, default='None', type=str, help='Adds members to a specific AD group. Example: "./AD_Utility --addgroupmembers <group(s)> --username <username(s)>"')
    parser.add_argument('--renamegroup', nargs=?, default='None', type=str, help='Renames the AD group"./AD_Utility --rename <group(s)> <new_group_name>"')
    parser.add_argument('--disableuser', nargs=?, default='None', type=str, help='Disables user from AD. Example: "./AD_Utility --disableusers --username <username(s)>"')
    parser.add_argument('--removeuserfromgroup', nargs=?, default='None', type=str, help='Disables user from AD. Example: "./AD_Utility --removeuserfromgroup <username> --group <groupname>"')
    parser.add_argument('--creategroups', nargs=?, default='None', type=str, help='Enter the name of the group you want to search for. Example: "aws')
    parser.add_argument('--username', nargs=?, default='None', type=str, help='Username of the account you intend to gain information on. Example: "amazing')
    parser.add_argument('--scope', nargs=?, default='None', type=str, help='Scope of the search for which you are executing. Example: "aws')
args = parser.parse_args()

function_mapping = {
 "listuser": attributes_of_a_user, # or optionally: {"function": attributes_of_a_user, "nargs": "?", "default":..}
 "listusergroups": find_users_groups,
 "listgroupmembers": get_users_associated_with_groups,
 "addgroupmembers": add_users_to_group,
# "renamegroup": 
 "disableuser": disable_user,
 "creategroups": create_group,
 "createuser": create_user_in_ad,
 # "username"
 # "scope"
}

for function_name, function in function_mapping.iteritems():
      if args[function_name]:
        function(*args[function_name])

service = args.serviceaccount
group = args.groups
listuser = args.listuser
listusergroups = args.listusergroups
addgroupmembers = args.addgroupmembers
disableuser = args.disableuser
group_name, new_group_name = args.renamegroup
scope = args.scope
username = args.username
new_users = get_users()

当我运行任何命令时，我如何得到无效的语法：

./<script_name>.py --create test123

谁能看到我在添加参数中的哪个地方出错了？

Answer 1

如果我理解正确，您想指定一个标志使用的命令行参数的数量？
看看this。具体来说：nargs - The number of command-line arguments that should be consumed. 例如，对于标志 --renamegroup，您需要 nargs=2 以便您可以将 --renamegroup oldname newname “Oldname”和“newname”作为 renamegroup 标志后面的两个参数。 基本上那条线应该是什么样子：

parser.add_argument('--renamegroup', nargs=2, default='None', type=str, help='Renames the AD group"./AD_Utility --rename <group(s)> <new_group_name>"')

Answer 2

尝试使用

parser.add_argument('--renamegroup', nargs=2, default='None', type=str, help='Renames the AD group"./AD_Utility --rename <group(s)> <new_group_name>"')

所以这个标志需要两个参数。