【super】
Return a proxy object that delegates method calls to a parent or sibling class of type. This is useful for accessing inherited methods that have been overridden in a class.
If the second argument is omitted, the super object returned is unbound.
If the second argument is an object, isinstance(obj, type) must be true.
If the second argument is a type, issubclass(type2, type) must be true (this is useful for classmethods).
Note super() only works for new-style classes.
a typical superclass call looks like this:
