torch.Tensor.index_fill_# Tensor.index_fill_(dim, index, value) → Tensor# Fills the elements of the self tensor with value value by selecting the indices in the order given in index. Parameters dim (int) – dimension along which to index index (LongTensor) – indices of self tensor to fill in value (float) – the value to fill with Example: >>> x = torch.tensor([[1, 2, 3], [4, 5, 6], [7, 8, 9]], dtype=torch.float) >>> index = torch.tensor([0, 2]) >>> x.index_fill_(1, index, -1) tensor([[-1., 2., -1.], [-1., 5., -1.], [-1., 8., -1.]])