def SetRecipientScreenName(self, recipient_screen_name):
    self._recipient_screen_name = recipient_screen_name
Rational + Rational     -> Rational
dataset/ETHPy150Open livid/v2ex/twitter/twitter.py/DirectMessage.SetRecipientScreenName--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/assumptions/handlers/sets.py/AskRationalHandler.Add