<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def add_to_user(self, name, **attrs):
 """Add attributes to a user. """

        user = self.get_user(name=name)
        attrs_ = user['user']
        attrs_.update(**attrs)