Transportation


#1



def hotel_cost(nights):
    return 140 * nights
def plane_ride_cost(city):
    if city == "Charlotte":
        return 183 
    elif city == "Tampa":
        return 220
    elif city == "Pittsburgh":
        return 222
    elif city == "Los Angeles":
        return 475
def rental_car_cost(days):
    cost == 40 * days
    if days >= 7:
        cost -= 50
    elif days >= 3 and days <= 7: 
        cost -= 20
    else:
        return cost

None 
Oops, try again. An error was raised for rental_car_cost(1): local variable 'cost' referenced before assignment

I have no idea what I am doing wrong, if someone could please help me to understand what is going wrong.  Help a pal out... Thanks.


#2

this line:

cost == 40 * days

what is it suppose to do? (yes, i know what its suppose to do, but i would like to hear it from you)


#3

It means the cost of the rental car is equal to how many days the car is rented multiplied by the cost of the car ($40).


#4

but cost is not yet defined, so how can it equal something?

usually we use is equal inside conditions (like if and elif), but in your case its not a condition?

The purpose of your function is to calculate how much it would cost to rent the car for x days.This means you need to calculate the $40 * days, then apply discount, then return the total cost for renting a car


#5

Okay, I think I get it. Thanks!


#6

i edited my earlier answer

So it would make sense to multiply $40 * days, and then store this in a variable. Then we can see if we need to apply discount, then finally we can return cost

If you need more help, post an updated version of your code


#7

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