Function reduce_sum

Computes the sum of elements across dimensions of a tensor. Reduces `input_tensor` along the dimensions given in `axis`. Unless `keep_dims` is true, the rank of the tensor is reduced by 1 for each entry in `axis`. If `keep_dims` is true, the reduced dimensions are retained with length 1.

(input_tensor,
               axis=None,
               keep_dims=False,
               name=None,
               reduction_indices=None)