Why passing exception as e doesn't work, while explicitely does?

October 16, 2023

I’m catching an exception and I want to pass it further. I’ve tried this the 2 following ways:

except exceptions.MyException as e:
  raise exceptions.MyException(message=e.message)

and:

except exceptions.MyException as e:
  raise e(message=e.message)

further, I catch it as this:

except ArticleNotAcceptable as e:
  Messages.flash(e.message)

While the first version works fine, the second doesn’t – it causes 'NoneType' object has no attribute 'id' that doesn’t tell me much. Can anyone please explain to me why?

>Solution :

exceptions.MyException is a class. e is an instance of MyException. You can call the class to get another instance of MyException. You cannot call an instance to get another instance.