What is wrong with my trip cost? It keeps giving me the error "hotel_cost(1) raised an error: unexpected EOF while parsing (, line 0)"

My Code:

def hotel_cost(nights):

nights = input("please enter the amount of nights your here")

140 * nights

return 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 = days * 40

if days >= 7:

cost -= 50

elif days >= 3:

cost -= 20

return cos

def trip_cost(city, days):

return rental_car_cost(days)+hotel_cost(days)+plane_ride_cost(city)