Exploring abstract data types 

Abstraction, in general, is a concept used to define complex systems in terms of their common core functions. The use of this concept to create generic data structures gives birth to Abstract Data Types (ADT). By hiding the implementation level details and giving the user a generic, implementation-independent data structure, the use of ADTs creates algorithms that result in simpler and cleaner code. ADTs can be implemented in any programming language such as C++, Java, and Scala. In this section, we shall implement ADTs using Python. Let's start with vectors first.