CODEWITHSUNDEEP
pythonpython-3.x
Daniel Stallard
Daniel Stallard

Reputation: 79

having trouble with my class and program operating together

Traceback (most recent call last): File "H:\Documents\itp100-softwaredesign\Assinginments\Project2\run_car.py", line 36, in main() File "H:\Documents\itp100-softwaredesign\Assinginments\Project2\run_car.py", line 23, in main my_car.accelerate() File "H:\Documents\itp100-softwaredesign\Assinginments\Project2\car.py", line 28, in accelerate speed + 5 TypeError: unsupported operand type(s) for +: 'Car' and 'int'

This is the error im getting. this is my code and my class. i need to add 5 to the speed 5 times with accelerate method and then -5 from the speed with the brake method. any advise would be helpful.Thanks

class Car:
    def __init__(self, year, make, speed):     
        self.__year_model = year     
        self.__make = make
        self.__speed = speed

    def __set_year(self, year):
        self.__year_model = year

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

    def __set_speed(self, speed):
        self.__speed 

    def __get_year(year):
        return self.__year_model

    def __get_model(model):
        return self.__make

    def __get_speed(accelerate):     
        return self.__speed


    #methods
    def accelerate(speed):
        return (speed + 5)


    def brake(speed):
        return (speed - 5)


import car
import time

def main():
    #Get the model of the car.
    year = input('Enter the year of the car: ')


    #Get the year of the car.
    make = input('Enter the model of the vehicle: ')

    speed = 0


    print('Okay we are not moving so your current speed is 0')

    #Create a car object.
    my_car = car.Car(year, make, 0)

    for count in range(5):
        print('Give it some gas!!!')
        time.sleep(2)
        my_car.accelerate()
        print('Your current speed is: ',my_car.get_speed())

    for count in range(5):
        print('Whoa whoa whoa slow dowwn!!!')
        time.sleep(2)
        my_car.brake()
        print('Your current speed is:', my_car.get_speed())



    print('Your', make, 'runs pretty good.')

main()

Upvotes: 0

Views: 49

Answers (2)

Turn
Turn

Reputation: 7020

There are number of issues with your code. To start with, all class methods should take self as their first parameters. Secondly, you define some class methods (like accelerate) that return values but then you aren't using those values. Perhaps in that case you really want to modify the speed within the method. E.g.:

    def accelerate(self):
        self.__speed += 5

I also notice that you're calling my_car.get_speed() but you haven't defined any method with that name (just __get_speed). You probably don't want to be naming your methods with double underscores. Take a look at naming conventions specified in PEP8.

Upvotes: 2

cdonts
cdonts

Reputation: 9599

You're missing the self parameter in your class' functions. It should be:

def accelerate(self, speed):

And remember to pass the speed argument when calling it!

Upvotes: 2

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