try function working on PC but not raspberry pi

[bowlofred]

I would expect float("not a numebr") to return an error for any version of python (a ValueError exception).

One problem you have is that you are catching all errors with the except: on line 6. You should instead catch only the ValueError thrown by the float that you might expect.

This causes a problem because line 4 has a typo (prnit instead of print). That syntax error it caught by line 6 and assumed to be a problem with the float. You don't print any information about the error.

Fix your typo and change the except line to except ValueError:

There's no difference here with your python version. I assume that you don't have an exact copy and only one of them has the typo in it.