Getting this error...pls explain

This error is occurring because in the line "car = Vehicle("car",45,15)", you are passing in 4 arguments to the init constructor, while the constructor only expects 3 arguments. Specifically, the first argument is being interpreted as the "self" parameter, the second is "max_speed", the third is "mileage", but you added an additional argument "car" which it does not expect.

You may have wanted to use first argument for "name" and use it in the display method. And you could add this as additional argument in constructor too.

class Vehicle:
    def __init__(self,name,max_speed,mileage):
        self.name = name
        self.max_speed = max_speed
        self.mileage = mileage
    def display(self):
        print(f'Name- {self.name}, max_speed - {self.max_speed} and mileage - {self.mileage}')
car = Vehicle("car",45,15)
car.display()

And this will run without any errors and prints

'Name- car, max_speed - 45 and mileage - 15'