[issue20503] super behaviour and abstract base classes (either implementation or documentation/error message is wrong)

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:


New changeset 7bc25ec7276db2a81e7823671a74eeb8aa6b4542 by Raymond Hettinger in branch 'master':
bpo-20503: Show how isinstance() works with ABC registered classes. (GH-25175)
https://github.com/python/cpython/commit/7bc25ec7276db2a81e7823671a74eeb8aa6b4542


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