def write(self, buf):
        for f in self.__files:
            f.write(buf)
TODO: add docstring
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/grizzled/grizzled/io/__init__.py/MultiWriter.write--crossover with--dataset/ETHPy150Open treasure-data/td-client-python/tdclient/account_model.py/Account.account_id