creating a class and making instances from it, cant get this to work .

Question

class Car(object):
def __init__(self, price, speed, fuel, mileage, price_plus_tax=value):
self.price = price
self.speed = speed
self.fuel = fuel
self.mileage = mileage
self.price_plus_tax = price_plus_tax
if price > 10000:
self.tax = 0.15
else:
self.tax = 0.12
self.displayAll()

def price_plus_tax(self, price_plus_tax=value):
if price > 10000:
self.price_plus_tax = self.price + self.price * self.tax;
else:
self.price_plus_tax = self.price + self.price * self.tax;
self.displayAll()

def displayAll(self):
print ('Price: ' + str(self.price))
print ('Speed: ' + str(self.speed) + ' mph')
print ('Fuel: ' + self.fuel)
print ('Mileage: ' +str(self.mileage) + ' mpg')
print ('Tax: ' + str(self.tax))
print ('price_plus_tax: ' + str(self.price_plus_tax))

#six instances of Car class
car1 = Car(5000, 40, 'Half Full', 10000)
car2 = Car(15000, 100, 'Full', 65000)
car3 = Car(2000, 50, 'Quarter Full', 300000)
car4 = Car(10000, 100, 'Mostly Full', 25000)
car5 = Car(17000, 75, 'Full', 40000)
car6 = Car(9000, 90, 'Empty', 55000)

Answer 1

Diego Acero I don't get any error 🤔 I just wanted to point out that the final price isn't quite right because it will add $ 5,000.10 taxes for a $ 5,000 car ☺️

Answer 2

Instructor M Make sure that def displayAll(self) is on the same indentation level as def __init__(self) and the other class methods. There has to be the exact same amount of spaces (usually four) at the beginning of the lines.

Answer 3

1. Comment (or delete) line 2.

2. Change lines 3-21 for this:

class Car(object):
def __init__(self, price, speed, fuel, mileage):
self.price = price
self.speed = speed
self.fuel = fuel
self.mileage = mileage
if price > 10000:
self.tax = 0.15
else:
self.tax = 0.10
self.price_plus_tax = self.price + self.price * self.tax
self.displayAll()

EDIT: Small mistake. Changed "...self.price + self.tax" to "...self.price * self.tax"

Answer 4

Change the formula to calculate the price plus tax to self.price + self.price * self.tax.

A method could look like this:

self.price_plus_tax = self.calculate_price_plus_tax()

def calculate_price_plus_tax(self):
if self.price > 10000:
tax = 0.15
else:
tax = 0.10
return self.price + self.price * tax

Answer 5

1. Variable "value" is not defined.

2. Function "price_plus_tax" is never used.

3. Next time please paste your code in the Code Playground and share the link.

Answer 6

Hello thanks again . I made the change . Having indentation error .

File "..\Playground\", line 15
def displayAll(self):
^
IndentationError: unindent does not match any outer indentation level

Answer 7

That's weird! Tried it in the Code Playground and in other IDE and no error message showed up.

Answer 8

Anna Is that what's causing the problem? If so, could you please explain why?

Answer 9

Anna Oh, right! Missed that. Thanks.

Answer 10

Change lines 11-14 for this:

self.price_plus_tax = self.calculate_price_plus_tax()
self.displayAll()

Answer 11

Thanks

here is the link , how do i fx it .

https://code.sololearn.com/c6KgyN2fw0U8

Answer 12

thanks . I would like to add either an attribute showing final price which includes sales price plus tax or more-likely a method .

Answer 13

ok thanks let me try one more time .

Answer 14

self.price_plus_tax = self.price + (self.price * self.tax)

made this change . still see this error when i run

File "..\Playground\", line 16
def displayAll(self):
^
IndentationError: unindent does not match any outer indentation level

Answer 15

Hello , i am having a little bit of trouble

Price: 5000
Speed: 40 mph
Fuel: Half Full
Mileage: 10000 mpg
Tax: 0.1
price_plus_tax: 5500.0
Price: 15000
Speed: 100 mph
Fuel: Full
Mileage: 65000 mpg
Tax: 0.15

Traceback (most recent call last):
File "..\Playground\", line 37, in <module>
car2 = Car(15000, 100, 'Full', 65000)
File "..\Playground\", line 12, in __init__
self.displayAll()
File "..\Playground\", line 32, in displayAll
print ('price_plus_tax: ' + str(self.price_plus_tax))
AttributeError: 'Car' object has no attribute 'price_plus_tax'