<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def login(self, db, login='admin', password='admin'):
 """Log in as the given `user` with the password `passwd` on the database `db`. .. doctest:: :options: +SKIP 'Administrator' *Python 2:* :raise: :class:`odoorpc.error.RPCError` :raise: `urllib2.URLError` (connection error) *Python 3:* :raise: :class:`odoorpc.error.RPCError` :raise: `urllib.error.URLError` (connection error) """

        # Get the user's ID and generate the corresponding user record
        data = self.json(
            '/web/session/authenticate',
            {'db': db, 'login': login, 'password': password})
        uid = data['result']['uid']
        if uid:
            context = data['result']['user_context']
            self._env = Environment(self, db, uid, context=context)
            self._login = login
            self._password = password
        else:
            raise error.RPCError("Wrong login ID or password")