Question

不确定我为什么会收到NameError：name＆＃39; Automobile＆＃39;没有定义。也许在过去的20分钟内没有盯着这个的人可能会有所帮助。我开始认为它可能是缩进，但还不太确定。

vehicles.py：

class Automobile:

    def __init__(self, make, model, mileage, price):
        self.__make = make
        self.__model = model
        self.__mileage = mileage
        self.__price = price

    def set_make(self, make):
        self.__make = make

    def set_model(self, model):
        self.__model = model

    def set_mileage(self, mileage):
        self.__mileage = mileage

    def set_price(self, price):
        self.__price = price

    def get_make(self):
        return self.__make

    def get_model(self):
        return self.__model

    def get_mileage(self):
        return self.__mileage

    def get_price(self):
        return self.__price

    class Car(Automobile):

        def __init__(self, make, model, mileage, price, doors):

            Automobile.__init__(self, make, model, mileage, price)

            self.__doors = doors

        def set_doors(self, doors):
            self.__doors = doors

        def get_doors(self):
            return self.__doors

car_demo.py：

import vehicles

def main():
    used_car = vehicles.Car("Audi", 2007, 12500, 21500.00, 4)

    print('Make:', used_car.get_make())
    print('Model:', used_car.get_model())
    print('Mileage:', used_car.get_mileage())
    print('Price:', used_car.get_price())
    print('# of doors:', used_car.get_doors())

main()

错误：

Traceback:
import vehicles, class Automobile:, and class Car(Automobile)

NameError: name 'Automobile' is not defined

我会认为将汽车定义为一个班级定义＆＃39;汽车＆＃39; 任何帮助将不胜感激。

我使用的是Python 3.5.2 IDLE

Answer 1

我认为你并不意味着缩进Car内的Automobile类。您应该取消缩进该类一级，而不是：

Automobile.__init__(self, make, model, mileage, price)

你应该使用：

super(Car, self).__init__(make, model, mileage, price)

如果你正在使用Python 3，你可以这样做：

super().__init__(make, model, mileage, price)

NameError：name＆＃39; Automobile＆＃39;没有定义

1 个答案: