1. 5d8bb5d bpo-32999: Revert GH-6002 (fc7df0e6) (GH-6189) (GH-6190) by Miss Islington (bot) · 7 years ago
  2. 346964b bpo-33018: Improve issubclass() error checking and message. (GH-5944) by Miss Islington (bot) · 7 years ago
  3. d824b4e bpo-32999: Fix ABC.__subclasscheck__ crash (GH-6002) by Miss Islington (bot) · 7 years ago
  4. 3892899 bpo-31333: Re-implement ABCMeta in C (GH-5733) by Ivan Levkivskyi · 7 years ago