在python中創建一個類的對象

Question

我在python中創建了一個類，爲什麼我得到這個錯誤？

class Car: 

    def __init__(self, name, brand): 
     self.name = name 
     self.brand = brand 

    def printDetails(self): 
     return 'Name: ', self.name, '\nBrand: ', self.brand 

    c1 = Car('A4', 'Audi') 

NameError: name 'Car' is not defined

Answer 1

必須定義c1的Car外。修復您的縮進：

class Car: 

    def __init__(self, name, brand): 
     self.name = name 
     self.brand = brand 

    def printDetails(self): 
     return 'Name: ', self.name, '\nBrand: ', self.brand 

c1 = Car('A4', 'Audi') 

提示：實施__str__或__repr__，而不是printDetails。

Answer 2

class Car: 

    def __init__(self, name, brand): 
     self.name = name 
     self.brand = brand 

    def printDetails(self): 
     return 'Name: ', self.name, '\nBrand: ', self.brand 

c1 = Car('A4', 'Audi')