- In Python, an inner class is a class that is defined inside another class. Inner classes are sometimes referred to as nested classes. Inner classes can be useful for organizing code, encapsulating ...

A function in python is a collection of commands or lines of code that are grouped into a single unit so that they can be called or used many times. A function can accept parameters, can return a ...

[See "Introducing Mypy, an Experimental Optional Static Type Checker for Python ... But then I show them that functions and classes are both objects, and they realize that Python's notion of ...