file.py 文件源码

def _save_chunk(self, n, data):
        if self._part_fd < 0:
            if not self._open_files():
                return False

        assert self._part_fd >= 0
        offs = self.chunk_size * n
        os.lseek(self._part_fd, offs, os.SEEK_SET)
        os.write(self._part_fd, data)
        self._segments_file.write(self._segments)

        return True