def greeting_decorator(original_function): def return_function(*args): name = 'John' return f'Hi, I\'m {name}, fullname: {original_function(*args)}' return return_function@greeting_decoratordef greeting(name, surname): return f'{name} {surname}'print(greeting('John', 'Doe'))上面，我有一個簡單的裝飾器函數(shù)，可以按預(yù)期工作。我想做類似的事情，但是使用繼承的類。我該如何繼承這樣的裝飾器函數(shù)：class Guy: def __init__(self, name): self.name = 'John' def greeting_decorator(self, original_function): def return_function(*args): return f'Hi, I\'m {self.name}, fullname: {original_function(*args)}' return return_functionclass GuyWithSurname(Guy): def __init__(self, name, surname): super().__init__(name) self.surname = surname @greeting_decorator # <----- here def __str__(self): return f'{self.name} {self.surname}' JohnDoe = GuyWithSurname('John', 'Doe')print(JohnDoe)
1 回答
慕哥6287543
TA貢獻(xiàn)1831條經(jīng)驗 獲得超10個贊
如果您確定父類始終是Guy，您可以簡單地通過以下方式進(jìn)行注釋@Guy.greeting_decorator：
class Guy:
def __init__(self, name):
self.name = 'John'
def greeting_decorator(original_function):
def return_function(self, *args):
return f'Hi, I\'m {self.name}, fullname: {original_function(self, *args)}'
return return_function
class GuyWithSurname(Guy):
def __init__(self, name, surname):
super().__init__(name)
self.surname = surname
@Guy.greeting_decorator # <----- here
def __str__(self):
return f'{self.name} {self.surname}'
JohnDoe = GuyWithSurname('John', 'Doe')
這樣，當(dāng)你調(diào)用print(JohnDoe)它時就會輸出Hi, I'm John, fullname: John Doe.
請注意，我必須更改greeting_decorator和return_function參數(shù)才能正確處理self.
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