Indentation in Python Last Updated : 24 Oct, 2025 Comments Improve Suggest changes 61 Likes Like Report In Python, indentation is used to define blocks of code. It tells the Python interpreter that a group of statements belongs to a specific block. All statements with the same level of indentation are considered part of the same block. Indentation is achieved using whitespace (spaces or tabs) at the beginning of each line.For Example: Python if 10 > 5: print("This is true!") print("I am tab indentation") print("I have no indentation") OutputThis is true! I am tab indentation I have no indentation The first two print statements are indented by 4 spaces, so they belong to the if block.The third print statement is not indented, so it is outside the if block.IndentationIf we Skip Indentation, Python will throw error. Python if 10>5: print("GeeksforGeeks") Note: This will give error - IndentationErrorError Indentation in Conditional StatementsThe lines print(‘GeeksforGeeks…’) and print(‘retype the URL.’) are two separate code blocks. The two blocks of code in our example if-statement are both indented four spaces. The final print(‘All set!’) is not indented, so it does not belong to the else block. Python a = 20 if a >= 18: print('GeeksforGeeks...') else: print('retype the URL.') print('All set !') OutputGeeksforGeeks... All set ! Indentation in LoopsTo indicate a block of code in Python, we must indent each line of the block by the same whitespace. The two lines of code in the while loop are both indented four spaces. It is required for indicating what block of code a statement belongs to. Python j = 1 while(j<= 5): print(j) j = j + 1 Output1 2 3 4 5 Create Quiz Comment N nikhilaggarwal3 Follow 61 Improve N nikhilaggarwal3 Follow 61 Improve Article Tags : Python python-basics Explore Python FundamentalsPython Introduction 2 min read Input and Output in Python 4 min read Python Variables 4 min read Python Operators 4 min read Python Keywords 2 min read Python Data Types 8 min read Conditional Statements in Python 3 min read Loops in Python - For, While and Nested Loops 5 min read Python Functions 5 min read Recursion in Python 4 min read Python Lambda Functions 5 min read Python Data StructuresPython String 5 min read Python Lists 4 min read Python Tuples 4 min read Python Dictionary 3 min read Python Sets 6 min read Python Arrays 7 min read List Comprehension in Python 4 min read Advanced PythonPython OOP Concepts 11 min read Python Exception Handling 5 min read File Handling in Python 4 min read Python Database Tutorial 4 min read Python MongoDB Tutorial 3 min read Python MySQL 9 min read Python Packages 10 min read Python Modules 3 min read Python DSA Libraries 15 min read List of Python GUI Library and Packages 3 min read Data Science with PythonNumPy Tutorial - Python Library 3 min read Pandas Tutorial 4 min read Matplotlib Tutorial 5 min read Python Seaborn Tutorial 3 min read StatsModel Library - Tutorial 3 min read Learning Model Building in Scikit-learn 6 min read TensorFlow Tutorial 2 min read PyTorch Tutorial 6 min read Web Development with PythonFlask Tutorial 8 min read Django Tutorial | Learn Django Framework 7 min read Django ORM - Inserting, Updating & Deleting Data 4 min read Templating With Jinja2 in Flask 6 min read Django Templates 5 min read Build a REST API using Flask - Python 3 min read Building a Simple API with Django REST Framework 3 min read Python PracticePython Quiz 1 min read Python Coding Practice 1 min read Python Interview Questions and Answers 15+ min read Like