signeds3.py 文件源码

def __iter__(self):
        try:
            with open(self.__filename, 'rb') as file_in:
                while True:
                    data = file_in.read(self.__chunksize)
                    if not data:
                        if self.__progressbar:
                            stdout.write("\n")
                        break
                    self.__readsofar += len(data)
                    if self.__progressbar:
                        percent = self.__readsofar * 100 / self.__totalsize
                        stdout.write("\r{percent:3.0f}%".format(percent=percent))
                    yield data
        except OSError as error:
            raise exception.SourceNotFound(error)