[Python-Dev] Small misleadingness in docs

[Greg Ewing]

I've discovered something slightly misleading in the docs
for PyObject_IsInstance:

   When testing if B is a subclass of A, if A is B, PyObject_IsSubclass
   returns true. If A and B are different objects, B‘s __bases__
   attribute is searched...

This suggests that issubclass(A, A) will always be true,
regardless of what attributes A has. However, this turns
out not to be so -- A must also have a __bases__ attribute,
otherwise it's rejected as not being sufficiently class-like.

-- 
Greg