ch3 4 implementation of stack in python

📘 **Implementation of Stack in Python | Data Structure Tutorial**

In this video, we will learn how to implement a **Stack in Python** using the built-in **list** data type. A stack follows the **LIFO (Last In First Out)** principle, where elements are inserted and removed only from the TOP of the stack.

🐍 Topics Covered in this Video:
• Introduction to Stack Implementation
• Using Python List as a Stack
• PUSH Operation using `append()`
• POP Operation using `pop()`
• Checking if Stack is Empty
• Finding Stack Size
• Reading the TOP Element
• Displaying Stack Elements
• Handling Underflow Condition
• Complete Python Program with Output

📌 Functions Explained:
✔ `isEmpty()` – checks whether stack is empty
✔ `opPush()` – inserts element into stack
✔ `opPop()` – removes top element from stack
✔ `size()` – returns number of elements
✔ `top()` – displays topmost element
✔ `display()` – shows all stack elements

🎯 This tutorial is helpful for:
• Class 11 & 12 Computer Science Students
• Python Beginners
• Data Structure Learners
• Exam Preparation & Practical Programs

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Видео ch3 4 implementation of stack in python канала Pri