store.py 文件源码

def append(self, array):
        """Append data from `array` to self."""
        if self.closed:
            raise ValueError('Array is not opened.')

        if not self.initialized:
            self.init_from_array(array)

        if array.shape[1:] != self.shape[1:]:
            raise ValueError("Appended array is of different shape.")
        elif array.dtype != self.dtype:
            raise ValueError("Appended array is of different dtype.")

        # Append new data
        pos = self.header_length + self.size * self.itemsize
        self.fs.seek(pos)
        self.fs.write(array.tobytes('C'))
        self.shape = (self.shape[0] + len(array), ) + self.shape[1:]

        # Only prepare the header bytes, need to be flushed to take effect
        self._prepare_header_data()

        # Invalidate the memmap
        self._memmap = None