`pickle.Pickler.reducer_override`: Positional parameter count mismatch; base method has 1, but override has 2

[eachimei]

CPython docs explain about Pickler.reduce_override:

https://docs.python.org/3/library/pickle.html#custom-reduction-for-types-functions-and-other-objects

it is possible to subclass from the Pickler class and implement a reducer_override() method.

And a code example is provided:

...
import pickle
...
class MyPickler(pickle.Pickler):
    def reducer_override(self, obj):
        """Custom reducer for MyClass."""
        ...

However, my code that does that now fails with pyright 1.1.393:

error: Method "reducer_override" overrides class "Pickler" in an incompatible manner
    Positional parameter count mismatch; base method has 1, but override has 2 (reportIncompatibleMethodOverride)

I think it's because of this definition in typeshed:

typeshed/stdlib/_pickle.pyi

Line 63 in c193cd2

reducer_override: Callable[[Any], Any]

[eachimei]

FYI @erictraut