"""策略模式"""import typesclass StrategyExample: def __init__(self, func=None):  self.name = '策略例子0'  if func is not None:   """給實(shí)例綁定方法用的，不會影響到其他實(shí)例"""   self.execute = types.MethodType(func, self) def execute(self):  print(self.name)def execute_replacement1(self): print(self.name + ' 從執(zhí)行1')def execute_replacement2(self): print(self.name + ' 從執(zhí)行2')if __name__ == '__main__': strat0 = StrategyExample() strat1 = StrategyExample(execute_replacement1) strat1.name = '策略例子1' strat2 = StrategyExample(execute_replacement2) strat2.name = '策略例子2' strat0.execute() strat1.execute() strat2.execute()