问题描述
我正在尝试为类编写代码,但在类方面遇到了巨大的麻烦.问题是我们编写一个具有一个类 Car
的脚本,将 speed
方法设置为0",并在一系列十次迭代中显示速度(分别调用 acceleration
和 brake
5 次).我得到的错误是:
回溯(最近一次调用最后一次):文件C:/Users/Brown Bear/Documents/Wake Tech/CIS115/Python Documents/Lab14P1.py",第 36 行,在 <module> 中.主要的()文件C:/Users/Brown Bear/Documents/Wake Tech/CIS115/Python Documents/Lab14P1.py", line 27, in mainmy_speed = 汽车()类型错误:__init__() 缺少 3 个必需的位置参数:'make'、'model' 和 'speed'
这是输出应该是什么的例子:
输入您的汽车型号:普锐斯输入您的汽车品牌:丰田当前速度:5当前速度:10当前速度:15当前速度:20当前速度:25当前速度:20当前速度:15当前速度:10当前速度:5当前速度:0
这是我的代码:
类汽车:def __init__(self, make, model, speed):self.make = 制作self.model = 模型self.speed = 速度def加速(自我):自身速度 += 5def 刹车(自己):self.speed -= 5def get_make(self):返回 self.makedef get_model(self):返回 self.modeldef get_speed(self):返回自身速度定义主():manuf = input('输入汽车品牌:')mod = input('请输入车型:')my_speed = 汽车()对于范围内的 num(5):my_speed.accelerate()print('当前速度:', my_speed.get_speed())对于范围内的 num(5):my_speed.brake()print('当前速度:', my_speed.get_speed())主要的()
我在这个特定问题上花费了大量时间并尝试了各种方法,我也研究了之前在这里提出的类似问题,但所有问题都太复杂了,我只需要一个简单的解决方案.任何和所有的帮助表示赞赏.谢谢!
当您创建类的实例时,您不会传递任何参数:
my_speed = Car()
但是你的定义说有 3 个必需的参数:
def __init__(self, make, model, speed):
因此您需要创建一个 Car 实例并传递 3 个参数:make、model 和 speed.
my_speed = Car(manuf, mod, some_Speed_val)
I'm attempting to write a code for class and am having immense trouble with classes. The problem is for us to write a script with one class, Car
, have the speed
method set to '0', and display the speed over a series of ten iterations (calling acceleration
and brake
five times each).The error I'm getting is:
And this is the example of what the output should be:
Enter model of your car: Prius
Enter make of your car: Toyota
Current speed: 5
Current speed: 10
Current speed: 15
Current speed: 20
Current speed: 25
Current speed: 20
Current speed: 15
Current speed: 10
Current speed: 5
Current speed: 0
And this is my code:
class Car:
def __init__(self, make, model, speed):
self.make = make
self.model = model
self.speed = speed
def accelerate(self):
self.speed += 5
def brake(self):
self.speed -= 5
def get_make(self):
return self.make
def get_model(self):
return self.model
def get_speed(self):
return self.speed
def main():
manuf = input('Enter the car make: ')
mod = input('Enter the car model: ')
my_speed = Car()
for num in range(5):
my_speed.accelerate()
print('Current speed: ', my_speed.get_speed())
for num in range(5):
my_speed.brake()
print('Current speed: ', my_speed.get_speed())
main()
I've spent a ridiculous amount of time on this particular problem and tried various ways, I've also researched similar questions previously asked on here but all are a bit too complex and I just need a simple solution. Any and all help appreciated. Thanks!
When you create an instance of your class you are not passing any arguments:
my_speed = Car()
But your definition says there are 3 required arguments:
def __init__(self, make, model, speed):
So you need to create an instance of Car and pass 3 arguments: make, model and speed.
my_speed = Car(manuf, mod, some_Speed_val)
这篇关于__init__() 缺少 3 个必需的位置参数的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!