Identity# class torch.nn.Identity(*args, **kwargs)[source]# A placeholder identity operator that is argument-insensitive. Parameters args (Any) – any argument (unused) kwargs (Any) – any keyword argument (unused) Shape: Input: (∗)(*)(∗), where ∗*∗ means any number of dimensions. Output: (∗)(*)(∗), same shape as the input. Examples: >>> m = nn.Identity(54, unused_argument1=0.1, unused_argument2=False) >>> input = torch.randn(128, 20) >>> output = m(input) >>> print(output.size()) torch.Size([128, 20])