我從我的一年級 CS 學生朋友那里得到了這個問題。問題：Xiaomi實現和Huawei繼承自 class 的類的設計SmartPhone，以便以下代碼生成以下輸出：給定代碼：class SmartPhone: def __init__(self, name): self.name = name def check(self): print(“The phone is working properly”) #Write your code heref = Xiaomi(“Redmi Note 8”)c = Huawei(“Y9”)f.check()print(“=========================”)c.check()print(“=========================”)輸出應該是：This is Xiaomi Redmi Note 8The phone is working properly=========================This is Huawei Y9The phone is working properly=========================我的解決方案：class SmartPhone: def __init__(self, name): self.name = name def check(self): print(self.__str__()) #changing parent class print('The phone is working properly')#Write your code hereclass Xiaomi(SmartPhone): def __str__(self): return f'This is Xiaomi {self.name}'class Huawei(SmartPhone): def __str__(self): return f'This is Huawei {self.name}'f = Xiaomi('“Redmi Note 8”')c = Huawei('“Y9”')f.check()print('=========================')c.check()print('=========================')我的解決方案通過更改父類來根據需要提供正確的輸出。但據說不改變父類SmartPhone，只構建子類來產生相同的結果。那么，如何在不改變父類的情況下產生結果呢SmartPhone？
2 回答
瀟瀟雨雨
TA貢獻1833條經驗 獲得超4個贊
您需要的是實現check調用父方法的方法：
class SmartPhone:
def __init__(self, name):
self.name = name
def check(self):
print(“The phone is working properly”)
#Write your code here
class Xiaomi(SmartPhone):
def check(self):
print(f"This is Xiaomi {self.name}")
super().check()
class Huawei(SmartPhone):
def check(self):
print(f"This is Huawei {self.name}")
super().check()
f = Xiaomi(“Redmi Note 8”)
c = Huawei(“Y9”)
f.check()
print(“=========================”)
c.check()
print(“=========================”)
蝴蝶不菲
TA貢獻1810條經驗 獲得超4個贊
當重寫超類的方法時，您需要調用 super。這意味著，
def check(self):
print(f"This is Xiaomi {self.name}")
super.check()
// codes for overriding
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