ndarray.py 文件源码

def _sync_copyfrom(self, source_array):
        """Peform an synchronize copy from the array.
        Parameters
        ----------
        source_array : array_like
            The data source we should like to copy from.
        """
        if not isinstance(source_array, np.ndarray):
            try:
                source_array = np.array(source_array, dtype=np.float32)
            except:
                raise TypeError('array must be an array_like data,' +
                                'type %s is not supported'
                                % str(type(source_array)))
        source_array = np.ascontiguousarray(source_array, dtype=np.float32)
        if source_array.shape != self.shape:
            raise ValueError('array shape do not match the shape of NDArray')
        source_arr, shape = NDArray._numpyasarray(source_array)
        check_call(_LIB.DLArrayCopyFromTo(
            ctypes.byref(source_arr), self.handle, None))
        # de-allocate shape until now
        _ = shape