Python errors

If your program has an error, the error pane will appear at the bottom left of the app. It will give you the Python error message, and the stack of locations in your program where the error occurred.

Errors can be:

syntax errors

where your program is not correct Python syntax, and which prevent your program from even starting to run, or

runtime exceptions

which can occur for many reasons, for example if you attempt to use an undefined variable, or divide by zero.

You should correct the error and try again to run your program.