grammar.py 文件源码

def monte_carlo_export(self, nonterminal, filename, samplesscalar=1, ):
        """
        returns a tab seperated value list of productions, duplicates removed.
        one thing I need to change is to output the set of markup in a nicer fashion
        """
        expansion = collections.Counter(sorted(self.monte_carlo_expand(nonterminal, samplesscalar)))
        with open(filename, 'a') as csvfile:
            row_writer = csv.writer(csvfile, delimiter='\t', quotechar='|', quoting=
            csv.QUOTE_MINIMAL)
            prob_range = 0
            for deriv in expansion:
                rng_interval = float(expansion[deriv]) / sum(expansion.values())
                rng_max = prob_range + rng_interval
                temp_prob = [prob_range, rng_max]
                row_writer.writerow(
                    [nonterminal, str(deriv.expansion),
                     '^'.join(str(annotation) for annotation in list(deriv.markup)),
                     [prob_range, rng_max]]
                )
                prob_range += rng_interval