numpy_pickle_utils.py 文件源码

def write(self, data):
        """Write a byte string to the file.

        Returns the number of uncompressed bytes written, which is
        always len(data). Note that due to buffering, the file on disk
        may not reflect the data written until close() is called.
        """
        with self._lock:
            self._check_can_write()
            # Convert data type if called by io.BufferedWriter.
            if isinstance(data, memoryview):
                data = data.tobytes()

            compressed = self._compressor.compress(data)
            self._fp.write(compressed)
            self._pos += len(data)
            return len(data)

    # Rewind the file to the beginning of the data stream.