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Python Python Basics All Together Now Handle Exceptions

Ruben Arellano
Ruben Arellano
732 Points

"Invalid literal" when entering a character into a int question

Whenever I put a character into the "how many tickets" prompt, I get this "invalid literal". Any idea what am I doing wrong?

Script:

try: tix_purchase = int(input("Hello {}.\n How many tickets would you like? ".format(name))) if ( tix_purchase > tickets_remaining ) : raise ValueError (" We don't have {}.".format(tickets_remaining)) except ValueError as err: print ("Uh oh! Invalid entry . {} Please try again.".format(err))

Console:

Please enter your name ruben
Hello ruben.
How many tickets would you like? jk
Uh oh! Invalid entry . invalid literal for int() with base 10: 'jk' Please try again.
There are 100 tickets available

1 Answer

Asher Orr
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.a{fill-rule:evenodd;}techdegree seal-36
Asher Orr
Python Development Techdegree Graduate 9,022 Points

Hi Ruben! You are seeing that error because of this line of code:

 tix_purchase = int(input("Hello {}.\n How many tickets would you like? ".format(name))) 

Specifically this:

int

That says "Python, what my user inputs/enters is going to be an integer! Throw an error if they enter anything that isn't an integer."

Since "jk" is a string, and not an integer, Python raised that ValueError.

Does that make sense?

PS- check out the markdown cheatsheet for syntax examples on how to format your post. It will make your code easier to read!