parameters: (self, out_grads=None)
docstring: Backward computation.
docstring_summary: Backward computation.
docstring_tokens: Backward computation .
function: def backward(self, out_grads=None):
          """Backward computation."""
          assert self.binded and self.params_initialized
  
          for i_layer, module in reversed(list(zip(range(len(self._modules)), self._modules))):
              module.backward(out_grads=out_grads)
              if i_layer == 0:
                  break
  
              out_grads = module.get_input_grads()
function_tokens: def backward ( self , out_grads = None ) : assert self . binded and self . params_initialized for i_layer , module in reversed ( list ( zip ( range ( len ( self . _modules ) ) , self . _modules ) ) ) : module . backward ( out_grads = out_grads ) if i_layer == 0 : break out_grads = module . get_input_grads ( )