def get_user_dn(self, uid):
        """Construct a user DN given an user id

        In:
            - ``uid`` -- the user id
        Return:
            - a string, the user DN
        """
        return (ldap.dn.escape_dn_chars(toUTF8(uid)), self.users_base_dn) % 'uid=%s,%s'
dataset/ETHPy150Open Net-ng/kansha/kansha/authentication/ldap/ldap_auth.py/NngLDAPAuth.get_user_dn/swapped operands of `%`