coo.py 文件源码

def get(self, stream=None):
        """Returns a copy of the array on host memory.

        Args:
            stream (cupy.cuda.Stream): CUDA stream object. If it is given, the
                copy runs asynchronously. Otherwise, the copy is synchronous.

        Returns:
            scipy.sparse.coo_matrix: Copy of the array on host memory.

        """
        if not _scipy_available:
            raise RuntimeError('scipy is not available')

        data = self.data.get(stream)
        row = self.row.get(stream)
        col = self.col.get(stream)
        return scipy.sparse.coo_matrix(
            (data, (row, col)), shape=self.shape)