mindspore.numpy.expand_dims

mindspore.numpy.expand_dims(a, axis)[源代码]

Expands the shape of a tensor.

Inserts a new axis that will appear at the axis position in the expanded tensor shape.

Parameters

  • a (Tensor) – Input tensor array.

  • axis (Union[int, list(int), tuple(int)]) – Position in the expanded axes where the new axis is placed,

Returns

Tensor, with the number of dimensions increased at specified axis.

Raises

  • TypeError – If input arguments have types not specified above.

  • ValueError – If axis exceeds a.ndim.

Supported Platforms:

Ascend GPU CPU

Examples

>>> import mindspore.numpy as np
>>> x = np.ones((2,2))
>>> x = np.expand_dims(x,0)
>>> print(x.shape)
(1, 2, 2)