1from ..backend import KeyringBackend
2
3
4class Keyring(KeyringBackend):
5    """
6    Keyring that return None on every operation.
7
8    >>> kr = Keyring()
9    >>> kr.get_password('svc', 'user')
10    """
11
12    priority = -1
13
14    def get_password(self, service, username, password=None):
15        pass
16
17    set_password = delete_password = get_password
18