Backport of _abccoll.py by Benjamin Arangueren, issue 1383.
With some changes of my own thrown in (e.g. backport of r58107).
diff --git a/Lib/abc.py b/Lib/abc.py
index d80fabd..6857029 100644
--- a/Lib/abc.py
+++ b/Lib/abc.py
@@ -69,7 +69,7 @@
if (args or kwds) and cls.__init__ is object.__init__:
raise TypeError("Can't pass arguments to __new__ "
"without overriding __init__")
- return object.__new__(cls)
+ return super(_Abstract, cls).__new__(cls)
@classmethod
def __subclasshook__(cls, subclass):