def create_auth_id():
"""
Create and return an unauthenticated auth_id.
:return: Newly generated auth_id.
:rtype: ``unicode``
"""
return "{}{}".format(_UNAUTHENTICATED_PREFIX, create_random_id())
def create_user(user_class):
"""
Return a new :class:`webapp2_extras.appengine.auth.models.User` or ``None``
if there is an error.
:param class user_class: User class.
:return: Newly created user.
:rtype: :class:`webapp2_extras.appengine.auth.models.User` or ``None``
"""
ok, user = user_class.create_user(auth_id=create_auth_id(), id=create_random_id())
return user
