# Besoin de votre aide

#1

Bonjour,
je ne sais pas ce qui ne va pas avec ce code, pouvez vous m’aider à résoudre ce problème

``````def hotel_cost(days):
return 140*days

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
return cost
elif days>=3:
cost-=20
return cost

def trip_cost(city ,days):
return 140*days + city + cost
``````

#2

In order to help you, we are going to need two things:

• A link to the lesson
• Any and all error messages you are receiving

#3

voila le lien pour la leçon
leçon
ainsi que le message :

``rental_car_cost(1) returned None instead of the correct value 40 `````

#4

Alright, there are a few problems with your code; The first problem can be found here:

``````  if days>=7:
cost -= 50
return cost
elif days>=3:
cost-=20
return cost
``````

You have used inconsistent indentation. In Python, where indentation is extremely important, it is highly recommended that you always use 4 spaces of indentation.

The other problem can be found here:

``````def trip_cost(city ,days):
return 140*days + city + cost
``````

You are using the variable `cost` in this calculation. However, `cost` has neither been defined globally nor within the scope of this function. Also, why are you doing `140 * days` when you already have a function that does this for you (i.e. `hotel_cost()`)?

Another issue with this function, is that `city` cannot be added to `days`, as `days` will be an integer and `city` will be a string. Besides, we don’t want to add `city` to these other numbers anyway, we want the cost of the plane ride to `city`, which is why we made a function earlier called `plane_ride_cost()`.

Lastly, you don’t need to add days to the function, but you do need to add the cost for renting a car for `days`. You made a function for this as well, it’s called `rental_car_cost()`.

Therefore, the function should actually look like this:

``````def trip_cost(city, days):
return hotel_cost(days) + plane_ride_cost(city) + rental_car_cost(days)
``````

#5

Merci pour votre réponse

#6

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