What does this error even mean?


the error is:

Oops, try again. trip_cost('Pittsburgh', 1) raised an error: 'function' object is not iterable

I have no idea what iterable even means but heres my code:

def hotel_cost(nights):
return 140 * nights

def plane_ride_cost(city):
if city == "Charlotte":
return 183
if city == "Tampa":
return 220
if city == "Pittsburgh":
return 222
if city == "Los Angeles":
return 475
print "invalid city name!!"

def rental_car_cost(days):
cost = days * 40
if days >= 7:
cost -= 50
elif days >= 3:
cost -= 20
return cost

def trip_cost(city, days):
return sum (nights) + (city) + (days)


You'll want to return the sum of three values in all.

lodging = hotel_cost(days)
transpo = rental_car_cost(days)
airfare = plane_ride_cost(city)

So the return value will then be,

return lodging + transpo + airfare

At some point you will want to include spending money in the total:

return lodging + transpo + airfare + spending_money

but that might not be until the next exercise.