Here's A Smarter Way To Use Exception Objects // Python Tips

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[TigerWalts]

You can also add a `__str__` method to your custom Exception so that you can dynamically build an error string from the provided data rather than having to pass it.

You could also pass a string to the custom Exception and use it in your `__str__` so you can add some context to the error message.

[RajaseelanGaneswaran]

Your videos are really great. I've started using type hinting and data classes because of your tutorials ❤

[MrAjiii]

Arjan on a mission with data classes lol OOP ftw 🔥🔥

[ManInSombrero]

Isn't it a bit too much love to dataclasses?

[AndrewZhilenko]

Thanks! I did not realize one can use dataclass for exception handling - so beautiful!

[twentytwentyeight]

Hi Arjan, if you happen to see this, would you be able to make a video on oop specifically for data transformations and loading? I never learned anything but notebooks in school and now I'm in over my head moving a simple notebook etl over to an oop style etl consuming from an api and loading to big query. If not, no worries! Thank you for all the amazing content, I'm learning so much from you!

[hcubill]

That's awesome Arjan. I didn't know that! Very useful

[bigutubefan]

Awesome! I was just literally looking up your other video on these :) Glad you're wearing hoodies again too Arjan.

[HIMixoid]

Never thought about it. Huh! Thanks for the video 😎😎

[lawrencedoliveiro]

0:33 Or you could have inherited from ValueError.

[kovalensue]

Arjan, why do you use only dataclasses everywhere? Regular classes are somehow obsolete or do you just find dataclasses more readable?

[spaghettiking]

How do you now see the associated information of the error? Is it printed out as well when you throw the new error type? And if so, what mechanism does that work by?

[ke_]

Would it make sense to have the custom exception extend ValueError instead ?

[nateriver]

Should we separate validation from implementation in a take holiday method?

[vladimirkraus]

When creating a custom exception class, I am often at doubts from which base class I should inherit. Should it be Exception or for example ValueError? Could you make a video about this problem of propose some solution and guidelines?

[iphoneman]

@arjanCodes Do you have the code on github for these youtube short videos?

[BradleyBell]

Would using dataclasses to create a linked list make sense?

[igor_sereda]

I would make the inheritance of a new custom error from ValueError instead of Exception, so that the whole set of possible validation errors could be caught by a higher level.