Chapter 16: Advanced Python Programming – Python Recursions
16.1 Introduction to Recursion Recursion is a powerful programming concept where a function calls itself to solve a smaller version of a problem. In Python, recursion is commonly used to solve problems that can be broken down into smaller, similar sub-problems—such as factorial calculation, Fibonacci sequence, tree traversals, and more. Definition A recursive function is one that calls itself, either directly or indirectly, to perform a task. Syntax of a Recursive Function in Python def recursive_function(): if base_condition: return result else: return recursive_function() Key Components of Recursion Base Case : The condition under which the recursion ends. Recursive Case : The part where the function calls itself. Without a base case, the recursion would continue infinitely, resulting in a RecursionError . 16.2 Why Use Recursion? Simplifies code for problems naturally defined recursively. Elegant and easy-to-understand logic...