Python Python Basics All Together Now Handle Exceptions

Why are we using "as" followed by err?

My code is working perfectly fine without it, even when presented with a ValueError. Adding this detail doesn't seem to change a single thing for me. I just don't get the point, can someone explain?

I am also confused about why we should use an alias for the ValueError. The code may work if the user enters a bigger value(numtickets) than (tickets_remaining) however when the user types a string again when asked how many tickets, it will show the phrase "invalid literal for int() with base 10". Isn't that what we're trying to avoid that's why we wrote the except block in the first place?

1 Answer

The as keyword is used to create an alias.

We give that ValueError the alias of err and then use it if we want to print that error out.

Please correct me if I'm wrong.