Update: I tried to make a simple calculator in Python and it kept crashing | Coding For Beginners

Michael Wood · 2026-03-16T01:10:06.124396+00:00

I followed a tutorial to make a calculator that adds two numbers. I used the input() function and typed '5' and 'three'. The program crashed with a ValueError. I learned that input() always gives you text, even if you type a number, so you need int() to change it. Has anyone found a better way to handle this without the program stopping?

sethh125mo ago

Yeah, wrapping the int() conversion in a try/except block is the move. That way it can catch the error and ask for the number again instead of just crashing.

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keving935mo ago

Wrapping it in try/except... I tried that once and still messed it up somehow.

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riley585mo ago

Totally agree with try/except, but you gotta make sure the except block actually prints a clear message so the user knows what to type instead.

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