User Defined Exceptions in Python

Question

I have seen on internet of User Defined Exception like this:
https://code.sololearn.com/cOft6Tuk3J62

Is there any way to have a print statement when we are defining the exceptions only so that we don't have to later include everytime the statement in "except".
(If I include a print statement while declaring the exception class it will always be printed at top)