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Use the built-in
WeakMethod
andinspect.ismethod
instead of a custom implementation.Build a cleanup callback from an id, rather than storing the id on an
annnotatable_weakref
subclass.Simplify the private
Symbol
class implementation.Use the built-in
cached_property
instead of a custom implementation.Use positional-only argument for
send(sender)
instead of*args
hack.This simplified the type annotations, which pass with pyright as well now.