def GetPublicTimeline(self, since_id=None):
    parameters = {}
    if since_id:
      parameters['since_id'] = since_id
    url = TWITTER_API_ROOT + 'statuses/public_timeline.json'
    json = self._FetchUrl(url,  parameters=parameters)
    data = simplejson.loads(json)
    self._CheckForTwitterError(data)
    return [Status.NewFromJsonDict(x) for x in data]
Rational ** Integer      -> Rational
dataset/ETHPy150Open livid/v2ex/twitter/twitter.py/Api.GetPublicTimeline--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/assumptions/handlers/sets.py/AskRationalHandler.Pow