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Python Syntax

2 min read ·

Python syntax is simple, clean, and easy to read. Unlike many programming languages, Python relies on indentation and readable structure instead of brackets or semicolons.

Python Indentation

Indentation in Python is mandatory. It defines blocks of code such as loops, conditions, and functions.
If indentation is incorrect, Python raises an error.
Important

Python uses spaces or tabs for indentation, but spaces are recommended.

Code Example 1: Correct Indentation

Code Example 2: Indentation in Loop

Code Example 3: Indentation Error Example

Python Variables

Variables are used to store data values in Python. Python creates variables automatically when you assign a value.
Python variables:
  • Do not need type declaration
  • Can change type dynamically
Key Rule

A variable name must start with a letter or underscore.

Code Example 1: Creating Variables

Code Example 2: Dynamic Typing

Code Example 3: Multiple Assignments

Python Comments

Comments are used to explain code and make it more readable. Python ignores comments during execution.
Python supports:
  • Single-line comments
  • Multi-line comments (using triple quotes)
Best Practice

Write comments to explain why the code exists, not what it does.

Code Example 1: Single-Line Comment

Code Example 2: Inline Comment

Code Example 3: Multi-Line Comment