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Python Python Basics All Together Now Handle Exceptions

Posted by Michael Haupt
Michael Haupt
Courses Plus Student 521 Points

I keep getting a syntax error for else and I can't figure out why, can anyone point out where my mistake is? 

TICKET_PRICE = 10

tickets_remaining = 100  


while tickets_remaining >=1:
    print("There are {} tickets remaining.".format(tickets_remaining))
    users_name = input("What is your Name? ")
    print("Hello", users_name)
    total = input("How many tickets would you like {}? ".format (users_name ))
    #expect a ValueError to happen and handle it appropriatly 
    total == int()
    try:
        if total > tickets_remaining:  
            raise ValueError("Sorry there are only {} tickets remaining".format (tickets_remaining))
        if total != int():
            raise ValueError("Sorry, numbers only")
    else:
        amount_due = total * TICKET_PRICE
        print("Your total will be {}.".format(amount_due))
    proceed = input("Do you want to proceed Y/N? ")
        if proceed.lower() == "y":
        # TODO: Gather credit card
            print("SOLD!")
            tickets_remaining = tickets_remaining - total
        else: 
            print("Thank you anyway", users_name)
    if tickets_remaining == 0:
        print("Sold Out")

1 Answer

Zimri Leijen
Zimri Leijen
11,835 Points
Zimri Leijen
Zimri Leijen
11,835 Points

If you want to put code in a comment, use codeblocks.

You can do so like this (the py is for python, you can also use css, js, etc for other languages, which gives it the right color codes, you can also leave it out):

```py
while tickets_remaining >=1: print("There are {} tickets remaining.".format(tickets_remaining)) users_name = input("What is your Name? ") print("Hello", users_name) total = input("How many tickets would you like {}? ".format (users_name )) #expect a ValueError to happen and handle it appropriatly total == int() try: if total > tickets_remaining: raise ValueError("Sorry there are only {} tickets remaining".format (tickets_remaining)) if total != int(): raise ValueError("Sorry, numbers only") else: amount_due = total * TICKET_PRICE print("Your total will be {}.".format(amount_due)) proceed = input("Do you want to proceed Y/N? ") if proceed.lower() == "y": # TODO: Gather credit card print("SOLD!") tickets_remaining = tickets_remaining - total else: print("Thank you anyway", users_name) if tickets_remaining == 0: print("Sold Out")
```

then it will look something like this (I couldn't be bothered fixing all the indentation etc.):

while tickets_remaining >=1:
    print("There are {} tickets remaining.".format(tickets_remaining))
    users_name = input("What is your Name? ")
    print("Hello", users_name)
    total = input("How many tickets would you like {}? ".format (users_name ))
    #expect a ValueError to happen and handle it appropriatly
    total == int() try: if total > tickets_remaining:
    raise ValueError("Sorry there are only {} tickets remaining".format (tickets_remaining)) if total != int(): raise 
   ValueError("Sorry, numbers only") else: amount_due = total * TICKET_PRICE print("Your total will be 
   {}.".format(amount_due)) proceed = input("Do you want to proceed Y/N? ") if proceed.lower() == "y": # TODO: Gather 
   credit card print("SOLD!") tickets_remaining = tickets_remaining - total else: print("Thank you anyway", users_name) if 
   tickets_remaining == 0: print("Sold Out")
Michael Haupt
Michael Haupt
Courses Plus Student 521 Points

I got it formated right, do you have any idea what my issue is?

Zimri Leijen
Zimri Leijen
11,835 Points

Ah, you have a Try: and then an Else: on the same level.

I think it should be try: and except instead.