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Python Object-Oriented Python Instant Objects Master Class

Christopher Fogarty
Christopher Fogarty
8,865 Points

Help with class RaceCar:

What is wrong with this:

class RaceCar:

def __init__(self, color, fuel_remaining, laps=0, **kwargs):
    self.color = color
    self.fuel_remaining = fuel_remaining
    self.laps = laps
    for key, value in kwargs.items():
        setattr(self, key, value)

def run_lap(self, length):
    self.fuel_remaining = fuel_remaining - (length * 0.125)
    self.laps += 1
racecar.py
class RaceCar:

    def __init__(self, color, fuel_remaining, laps=0, **kwargs):
        self.color = color
        self.fuel_remaining = fuel_remaining
        self.laps = laps
        for key, value in kwargs.items():
            setattr(self, key, value)

    def run_lap(self, length):
        self.fuel_remaining = fuel_remaining - (length * 0.125)
        self.laps += 1

2 Answers

You forgot the word self in this assignment:

self.fuel_remaining = fuel_remaining - (length * 0.125)

It should read:

self.fuel_remaining = self.fuel_remaining - (length * 0.125) # parenthesis being optional

Alternatively, you could also have:

self.fuel_remaining += length * 0.125
Christopher Fogarty
Christopher Fogarty
8,865 Points

Dude. Thank you,

This worked:

class RaceCar:

def __init__(self, color, fuel_remaining, laps=0, **kwargs):
    self.color = color
    self.fuel_remaining = fuel_remaining
    self.laps = laps
    for key, value in kwargs.items():
        setattr(self, key, value)

def run_lap(self, length):
    self.fuel_remaining -= (length * 0.125)
    self.laps += 1