Is there a convenient way to express "the type of my primary keys"?

[lyric summit]

In my current project, my models all default to BigAuto for their primary keys. I have lots of functions that take primary keys as arguments, and that use type hinting; they look like

def channel_name_from_player_pks(pk1: int, pk2: int):

That's fine, but I dread the day when I decide to switch to UUIDs or something for my primary keys, and I'll have to update a zillion function signatures.

So I'm hoping there's some way I can add another level of indirection. I'll probably put something like

PK = it
``` in some globally-available module, and change the signatures to look like 
```py
def channel_name_from_player_pks(pk1: PK, pk2: PK):
```, but this feels kind of klunky.  

Has anyone else solved this problem more elegantly?

[tidal violet]

A type alias? Pretty much the clunky solution you shared. https://docs.python.org/3/library/typing.html#type-aliases

type PK = int

[lyric summit]

yep

now I have to import it in all the modules that use it, but ... 🤷

[lyric summit]

done!

Thanks @tidal violet