If you are learning Python, you may have seen this error:
IndentationError: unexpected indentUnlike many other languages, indentation is part of Python syntax.
This error appears when Python finds spaces or tabs where it does not expect them.
Let’s understand this in the simplest way.
What Does This Error Mean?
Python found extra spaces or tabs at the beginning of a line where they are not allowed.
In Python, indentation must follow strict rules.
You cannot add random spaces like in Java or JavaScript.
❌ Example 1 – Extra Space at the Start
print("Hello World")
Output
IndentationError: unexpected indent✅ Fix
Remove the extra space:
print("Hello World")❌ Example 2 – Indent Without a Block
name = "Alice" print(name)Python does not expect indentation after a normal statement.
✅ Fix
name = "Alice"print(name)❌ Example 3 – Mixing Tabs and Spaces
def show(): print("Hello") # tab print("World") # spacesMixing tabs + spaces confuses Python.
✅ Fix
Use only spaces (recommended):
def show(): print("Hello") print("World")❌ Example 4 – Wrong Indentation Level
if True:print("Hi")Code inside if must be indented.
✅ Fix
if True: print("Hi")🧠 Why Python Is Strict About Indentation
In Python, indentation:
- Defines code blocks
- Replaces
{ }used in other languages - Makes code more readable
So Python treats wrong indentation as a syntax error.
✅ Simple Rules to Avoid This Error
- Do not add spaces at the beginning randomly
- Indent only after:
if,for,while,def,class,try
- Use either spaces OR tabs — never both
- Recommended: use 4 spaces per indent
🛠 Best Practice in VS Code / Editors
- Enable: Convert tabs to spaces
- Set indentation to 4 spaces
- Turn on: Show whitespace
🎯 Interview One-Liner
IndentationError: unexpected indent occurs when Python finds indentation at a place where it is not syntactically allowed.
✨ Final Thought
Python is basically saying:
“I didn’t ask for indentation here!”
Fix the spaces → error gone 🚀
