> > Aha. You're trying to fix up the metaclass after the fact, which is not > the right way to do it. If you change the class definitions to: > __metaclass__ = whatever; # is python2.x syntax
> then you get the prints from MyMeta.__instancecheck__(). The > isinstance() still returns True, though, and I don't know why. Then > again, your definition of MyMeta is really weird. weird how..? (I'm just trying to figure out what's going on with __instancecheck__ - no further higher purpose :p) example, when we do: isinstance(x, (A, B, C)) you expect from the docs that A.__instancecheck__(cls, x) is passed but x = [] also, B and C.__instancecheck__ is not called when I return False Also if I interchange (Bar, Foo), expecting that Foo.__instancecheck__ will be called, it's completely bypassed -- https://mail.python.org/mailman/listinfo/python-list
