def batch_span_tokenize(self, strings):
        for s in strings:
            yield list(self.span_tokenize(s))
Create the Python descriptor that will serve as
dataset/ETHPy150Open reefeed/wanish/wanish/tokenizers.py/TokenizerI.batch_span_tokenize--crossover with--dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/orm/descriptor_props.py/CompositeProperty._create_descriptor