[issue33624] Implement subclass hooks for asyncio abstract classes

Change by Ivan Levkivskyi : -- nosy: +levkivskyi ___ Python tracker ___ ___

[issue33624] Implement subclass hooks for asyncio abstract classes

New submission from Andrew Svetlov : To make clean inheritance hierarchy of objects implemented by third-party loop implementations. Now is impossible to implement AbstractServer in C or Cython. See also https://github.com/MagicStack/uvloop/issues/131 --