What is a sibling class in Python?

Question

Python 2 documentation says that super() function \"returns a proxy object that delegates method calls to a parent or sibling class of type.\"

The questions:

Answer 1

A sibling is a class with the same parent, as you suspected. The case you're missing is that super could call a sibling method if this class itself is being multiply inherited from:

class A(object):
  def something(self):
    print("A")
class B(A):
  def something(self):
    print("B")
class C(A):
  def something(self):
    print("C, about to call super()")
    super(C, self).something()
class D(C, B):
  def something(self):
    super(D, self).something()

>>> D().something()
C, about to call super()
B

In C, we called super(), but we got B - which is a sibling, not a parent and not the parent of a sibling, but an actual direct sibling of C.