@ops.RegisterGradient('AccumulateNV2')
def _accumulate_n_grad(op, grad):
    'Same as gradient for AddN. Copies the gradient to all inputs.'
    return ([grad] * len(op.inputs))
Same as gradient for AddN. Copies the gradient to all inputs.
@ops.RegisterGradient('AccumulateNV2')
def _accumulate_n_grad(op, grad):
    
    return ([grad] * len(op.inputs))