Plan your trip exercise -


For the plan your trip exercise i am getting this error

Traceback (most recent call last):
File “python”, line 27, in
File “python”, line 24, in trip_cost
TypeError: unsupported operand type(s) for +: ‘int’ and ‘NoneType’

Please help whats wrong in t

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

def rental_car_cost(days):
  if days>7 or days==7:
    total = total-50
  elif days>3 or days==3:
    total = total-20
    return total

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

print trip_cost("Los Angeles",5,600)


Have you considered what the rental_car_cost will return for 7 days ?


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