parameters: (self)
return_statement: return self.num_physical_nodes - self.num_terminals - self.num_terminal_NIs
docstring: @return number of movable nodes
function: def num_movable_nodes(self):
          """
          @return number of movable nodes
          """
          return self.num_physical_nodes - self.num_terminals - self.num_terminal_NIs
function_tokens: def num_movable_nodes ( self ) : return self . num_physical_nodes - self . num_terminals - self . num_terminal_NIs