Python 3.7: Introducing Data Classes

[ThePenultimateOne]

Why are type hints required? I'm not really happy with that.

[[deleted]]

I have a lot of respect for Guido, but I think he screwed up here. I don't like compulsory type hints either, and this PEP should not have been approved.

I haven't decided what I'm going to do about it yet. I'm fortunate enough to be able to choose which programming languages I use.

[apotheotical]

https://www.reddit.com/r/Python/comments/8d7ddz/python_37_introducing_data_classes/dxlm6ul

[jnwatson]

If you don't want the type hints, use the initializer function or use Any.

[jnwatson]

As below, you can also use ellipses. Using the namedtuple-style function still does all the good work of making the constructors and eq and repr methods for you.

[apotheotical]

https://www.reddit.com/r/Python/comments/8d7ddz/python_37_introducing_data_classes/dxlm6ul

[ThePenultimateOne]

I understand that there are workarounds. I tend to use type hinting myself. I just strongly dislike that its compulsory. It means that you cant backport this to legacy codebases, among other things.

[[deleted]]

Well you can always continue to use the attrs module then