'Initialize the sensor.'

def __init__(self, user, lastfm):

    self._user = lastfm.get_user(user)
    self._name = user
    self._lastfm = lastfm
    self._state = 'Not    Scrobbling'
    self._playcount = None
    self._lastplayed = None
    self._topplayed = None
    self._cover = None
