[power2]

can anyone who knows python help me with this exercise ?


def hotel_cost(nights):
if hotel_cost == 140 / 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):
rent = 40 days
if days >= 7:
rent -= 50
elif days >= 3:
rent -= 20
return rent

1- Below the existing code, define a function called | trip_cost | that takes two arguments, | city | and | days |

2- make your function return the sum of calling the
| rental_car_cost(days) | ,
| hotel_cost(days) | ,
and | plane_ride_cost(city) | functions.

[LeHaine]

It is very easy. Call all the existing functions and grab their value and add them up. Return the added up values.

Something like this:

Code

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

[power2]

It is very easy. Call all the existing functions and grab their value and add them up. Return the added up values.

Something like this:

Code

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

i have try more times this but it sad error : hotel_cost(1) returned None instead of the correct value 140

[LeHaine]

i have try more times this but it sad error : hotel_cost(1) returned None instead of the correct value 140

Well looking at your given code for hotel_cost() it shows:

Code

if hotel_cost == 140 / nights:
return 140 * nights

If the hotel_cost variable doesn't satisfy that expression it will not return 140 * nights. It will return None. Are you missing code for that function?

[SIM-1866423]

Try this ;

PHP Code


<?php 
def hotel_cost(nights):
    print hotel_cost
    if hotel_cost == 140 / nights:
        return 140 * nights
print hotel_cost( 14)
#<function hotel_cost at 0xb748c684>
#None 


hotel_cost is function not variable.If you change the hotel_cost so its can be work ..

PHP Code


<?php 
if 10 == 140 / nights:
      return 140 * nights
print hotel_cost( 14)
#1960 


[theDIVISION]

PHP Code


<?php 
def tripCost():
    total = 0
    n = raw_input("Nights?: #")
    c = raw_input("City: ")
    r = raw_input("Days?: ")

    total += hotel_cost(n)
    total += int(plane_ride_cost(c))
    total += rental_car_cost(r)

    print (total) 


That would be the main scheme behind it OP, now if you want me to post a shorter version, let me know. For this, you would have to input the values in manually.

[power2]

PHP Code


<?php 
def tripCost():
    total = 0
    n = raw_input("Nights?: #")
    c = raw_input("City: ")
    r = raw_input("Days?: ")

    total += hotel_cost(n)
    total += int(plane_ride_cost(c))
    total += rental_car_cost(r)

    print (total) 


That would be the main scheme behind it OP, now if you want me to post a shorter version, let me know. For this, you would have to input the values in manually.

it gives me an example :

def double(n):
return 2 n
def triple(p):
return 3 p

def add(a, b):
return double(a) + triple(b)