I've recently come across a use of multiple inheritance in some python code that shows me why this is multiple inheritance is a bad thing. It seems to break the OOP concept of encapsulation.

To quote Bjarne Stroustrup, "Multiple inheritance is like a parachute. Most of the time you don't need it, but when you do need it, you really need it." In the early days of C++, before templates ...

Java’s single inheritance limitation is usually not a problem in the normal course of development. In fact, the need to use multiple inheritance could be a sign of a bad design.

Multiple interface inheritance still allows an object to inherit methods and to behave polymorphically on those methods. The inheriting object just doesn’t get an implementation free ride.