code: def size(self):
          '''Returns genome 'complexity', taken to be (number of nodes, number of enabled connections)'''
          num_enabled_connections = sum([1 for cg in self.connections.values() if cg.enabled is True])
          return len(self.nodes), num_enabled_connectionf size(self):
          '''Returns genome 'complexity', taken to be (number of nodes, number of enabled connections)'''
          num_enabled_connections = sum([1 for cg in self.connections.values() if cg.enabled is True])
          return len(self.nodes), num_enabled_connections
docs: Returns genome 'complexity', taken to be (number of nodes, number of enabled connections)