How to get password via argparse?

Question

Python

I try to get the password in this way , but even nothing comes out, I do it like this

class Password(argparse.Action):
     def __call__(self, parser, namespace, values, option_string):
        if values is None:
            values = getpass.getpass()
        setattr(namespace, self.dest, values)

parser = argparse.ArgumentParser('bla bla bla')
parser.add_argument('user', help='User name to use for authentication', type=str)
parser.add_argument('-p', action=Password, nargs='?', dest='password', helс p='Enter your password')
print(parser.parse_args())

but in the end I get Namespace( password=None, user='user'), I tried it as in the documentation with init but nothing works either, I checked it with a print from __call__ and realized that the script does not even go inside, please tell me what I'm doing wrong, python 2.7