@property
    def is_alpha(self):
        return self._RE_ALPHA.match(self.tok)
L{Request.stopWriting} calls its body producer's C{stopProducing}
dataset/ETHPy150Open nltk/nltk/nltk/tokenize/punkt.py/PunktToken.is_alpha--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/web/test/test_newclient.py/RequestTests.test_stopWriting