[REQUEST] Allow classes as renderables

[buhrmann]

Hi, I'd like to be able to pretty print both instances as well as classes using the __rich_console__ protocol (specifically in the context of pydantic models). In theory this can be achieved using Descriptors, like so:

class RichConsole:
    def __get__(self, ins, cls):
        if ins is None:
            return cls.__cls_rich_console__

        return ins.__inst_rich_console__


class Model:

    def __inst_rich_console__(self, console, options):
        yield Text("Hello instance!!!")

    @classmethod
    def __cls_rich_console__(cls, console, options):
        yield Text("Hello class!!!")

    __rich_console__ = RichConsole()


m = Model()
print(m)
print(Model)

which produces something like

Hello instance!!!
Hello class!!!

But only if I remove the isclass check here:

rich/rich/console.py

Line 1319 in 8c4d3d1

if hasattr(renderable, "__rich_console__") and not isclass(renderable):

I'm sure the check is there for a good reason, but would there be a way to allow this in some other way?

[willmcgugan]

I can't imagine a use-case where you would want this. Not suggesting there couldn't be one, but you would need to convince me that this is a good idea and that there isn't a better alternative solution to whatever you have in mind...

[willmcgugan]

Closing since you haven't supplied a use-case. Re-open if you can explain why you need it.

[github-actions]

I hope we solved your problem.

If you like using Rich, you might also enjoy Textual