torch.Tensor.size

Tensor.size(dim=None) → torch.Size or int

Returns the size of the self tensor. If dim is not specified, the returned value is a torch.Size, a subclass of tuple. If dim is specified, returns an int holding the size of that dimension.

Parameters:

dim (int, optional) – The dimension for which to retrieve the size.

Example:

>>> t = torch.empty(3, 4, 5)
>>> t.size()
torch.Size([3, 4, 5])
>>> t.size(dim=1)
4