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Python

Posted by Shmuel Zilberman
Shmuel Zilberman
1,409 Points

python

ive fallowed along with the class but there is one thing i didn't really understand is the "def" function over here can some one please explain what it does and whats its doing over here thanks in advance

SERVICE_CHARGE = 2 TICKET_PRICE = 10

tickets_reamining = 100

this part...

def calculate_price(number_of_tickits): return number_of_tickets * TICKET_PRICE * SERVICE_CHARGE

while tickets_reamining >= 1:
    print("there are {} tickets reamining.".format(tickets_reamining))
    name = input("whats your name ?  ")
    tickits_you_want = input("how many tickets you want {} ".format(name))
    try:
        tickets_you_want = int(tickets_you_want)
        if tickets_you_want > tickets_reamaning:
            raise ValueError("there are on an  x amount of tickets left try again man")
    except ValueError as err:
        print("oh no that doesnt make that much sence type something that makes sence..")
    else:    
        ammount_due = calculate_price(num_tickets)
        print("the total is {}".format(ammount_due))

        keep_going_man = input("do you wanna continue  ? y/n ")
        if should_prossed.lower() == "y"
            print("sold please come by again dear")
            tickets_remaining -= num_tickets
        else:
        print("you suck")
Øyvind Andreassen
Øyvind Andreassen
16,840 Points

Looks like you have some typos in your variable names. On line 4 you declare tickits_you_want, but in the try you check tickets_you_want. Also tickets_remaining is misspelled tickets_remaining.

1 Answer

Ivan Kazakov
PLUS
Ivan Kazakov
Courses Plus Student 43,317 Points
Ivan Kazakov
Ivan Kazakov
Courses Plus Student 43,317 Points

There's probably a typo in your function. It is most likely defined as follows:

def calculate_price(number_of_tickits):
    return number_of_tickets * TICKET_PRICE + SERVICE_CHARGE

That is, SERVICE_CHARGE is added rather than multiplied by. It adds a fixed fee of 2 dollars to total amount.