4.1 – Introduction to Functions (User Defined Function – Type 1) | Python Programming – New Series

Welcome to the Python Programming – Complete Course (New Series) by Burle Sharma. In this class (4.1), we start a new and very important chapter – Functions. 👉 Functions are one of the most powerful concepts in programming that help in writing modular, reusable, and organized code. In this video, I have: ✔ Introduced the concept of functions ✔ Classified functions into two types:  • Predefined (Built-in) Functions  • User Defined Functions ✔ Explained that user defined functions are further categorized into four types based on:  • Input  • Process  • Output ✔ Started with the first type of user defined function, where:  • Input is taken inside the function  • Processing is done inside the function  • Output is also displayed inside the function  • Function is simply called from outside 🎓 What You’ll Learn in This Video • What is a function in Python • Types of functions • Difference between built-in and user defined functions • Concept of modular programming • First type of user defined function • Writing and calling a function • Understanding input-process-output inside function 🧠 Concept Explanation 👉 Functions are classified into: ✔ Predefined (Built-in) Functions  • Already available in Python  • Example: print(), input(), len() ✔ User Defined Functions  • Created by programmer  • Used to solve specific problems 👉 User Defined Function – Type 1 ✔ Input → Inside Function ✔ Process → Inside Function ✔ Output → Inside Function 👉 Function is called from outside, but all work happens inside. 🧠 Key Learning Point 👉 This type of function is best for beginners because: ✔ Easy to understand ✔ All logic is in one place ✔ Helps to learn function structure 👉 It builds the foundation for understanding advanced function types. 🎯 Why This Video Is Important This lesson helps students: • Understand the concept of functions • Learn code reusability • Write structured programs • Build strong programming fundamentals Functions are widely used in all real-world applications. #Python #PythonProgrammingNewSeries #BurleSharma #FunctionsInPython#UserDefinedFunction #PythonBeginners#PythonConcepts #ModularProgramming#Geecoding #PythonClass41