Can't find an equivelant to tensor.expand_dims in pytorch

1

I am implementing a pairwise distance function and I can’t find an pytorch equivalent to do the following

    # ||a - b||^2 = ||a||^2  - 2 <a, b> + ||b||^2
    distances = tensor.expand_dims(square_norm, 0) - 2.0 * dot_product + tensor.expand_dims(square_norm, 1)
2 
    distances = torch.unsqueeze(square_norm, 0) - 2.0 * dot_product + torch.unsqueeze(square_norm, 1)

worked for me