def next_gray(self):
        return self.iterate_graycode(1)
Given a text, generates the sentences in that text by only
dataset/ETHPy150Open sympy/sympy/sympy/combinatorics/subsets.py/Subset.next_gray--crossover with--dataset/ETHPy150Open nltk/nltk/nltk/tokenize/punkt.py/PunktSentenceTokenizer.sentences_from_text