Free Python Formatter & Validator

What is SQL Formatting?

SQL formatting is the process of organizing SQL queries into a clean and readable structure with proper indentation, aligned keywords, and consistent casing. A well-formatted query makes it easier to read, understand, debug, and maintain.

SQL Validation

SQL validation checks if a SQL query is syntactically correct according to SQL standards. It helps ensure that the query can run successfully on a database engine without errors before execution.

Common Errors

Common SQL errors often result from incorrect syntax, poor formatting, unclear indentation, and improper clause structure, which can lead to execution failures or maintenance issues.

Well-Formed SQL

Well-formed SQL uses correct syntax, consistent formatting, clear indentation, and logical structure, making queries reliable and easy to maintain.

How To Use Python Formatter & Validator

📝 Step 1: Enter Python Code

Paste your Python code in the input area. Supports single scripts and multiple functions/classes.

⚙️ Step 2: Choose Python Version & Indentation

Select your Python version (2.7, 3.6+) for accurate validation and preferred indentation style.

🔧 Step 3: Format or Validate

Click "Format Python" to beautify your code with proper PEP 8 indentation. Click "Validate Python" to check for syntax errors.

📋 Step 4: Copy or Download

Use the "Copy" button to copy formatted Python to clipboard, or "Download" to save as .py file.

💡 Pro Tips

Use the Sample button to load an example script
Validation checks for: indentation errors, missing colons, invalid syntax, unmatched brackets
Formatting preserves comments and docstrings
Works with complex code including decorators, list comprehensions, and context managers

🔍 Example

# Before formatting:
def factorial(n):
if n==0 or n==1:
return 1
else:
return n*factorial(n-1)

# After formatting:
def factorial(n):
    if n == 0 or n == 1:
        return 1
    else:
        return n * factorial(n - 1)

Frequently Asked Questions

What Python versions are supported? ▼

We support Python 2.7, 3.6, 3.7, 3.8, and 3.9+. Each version has its own validation rules for syntax, keywords, and built-in functions.

Does it validate all Python syntax? ▼

The validator checks for common syntax errors including: indentation errors, missing colons, unmatched parentheses/brackets, invalid keywords, and basic semantic rules. It's designed for standard Python syntax checking.

What formatting options are available? ▼

The formatter adds proper PEP 8 indentation (configurable spaces/tabs), consistent spacing around operators, blank lines between functions/classes, and preserves comments and docstrings. It makes your Python code clean and readable.

Can I format multiple functions and classes? ▼

Yes! The tool handles complete Python scripts with multiple functions, classes, decorators, and imports. Everything is formatted consistently according to PEP 8 guidelines.

Is my Python code secure? ▼

Absolutely. All processing happens in your browser. Your Python code is never sent to our servers. It's completely client-side for privacy and security.

What are common Python errors it detects? ▼

Common errors include: IndentationError, SyntaxError (missing colons), NameError (undefined variables), TypeError, and version-specific syntax issues (like print statement vs function).

Does it work with Python type hints? ▼

Yes! The formatter and validator fully support Python type hints (PEP 484) and will properly format function annotations and variable type hints.

How accurate is the validation? ▼

The validator catches most syntax errors but may not catch runtime errors or logical bugs. It's great for syntax checking and quick formatting before running your code in an actual Python interpreter.

Input Python Code

Results