PEP8 Formatter

A web-based tool that formats Python code to meet PEP8 standards, helping developers enforce consistent style and indentation across snippets and small projects.

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2,016+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how PEP8 Formatter processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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À propos de cet outil

The PEP8 Formatter Online formats Python code to meet PEP8 standards. It accepts a code snippet and returns a compliant version, enabling quicker reviews and consistent styling across projects.
Conceptually, the tool tokenizes the input, normalizes indentation to 4 spaces, enforces a configurable maximum line length, trims trailing whitespace, and standardizes blank lines. It reports changes and produces diagnostics to support downstream tooling or audits.
Beneficiaries include individual developers, students, and small teams seeking faster code reviews and uniform style without manual edits. Its unique value lies in automated, standards-based formatting with a compact diagnostics payload and adjustable line length, providing a reliable baseline for ongoing coding practices and tutorials.

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Comment utiliser

Provide inputs: paste your Python code, set max_line_length and indent_style.
Choose rules: decide whether to enforce import-order or whitespace adjustments.
Run formatter: generate formatted_code and diagnostics.
Review outputs: inspect changes and any reported issues.
Save or copy: export the formatted code to a file or clipboard for integration.

Frequently Asked Questions

Trouvez des réponses rapides

What does the formatter do to my code?

It applies PEP8-compliant formatting rules, standardizes indentation, wraps lines to a configured length, trims whitespace, and inserts appropriate blank lines. It also provides diagnostics for any changes made or issues detected.

Can it handle syntax errors in my code?

If parsing fails due to syntax errors, the formatter returns the best-effort formatted code and a diagnostic indicating the failure, helping you identify and fix issues before reformatting.

Can I customize the line length?

Yes. The max_line_length input is configurable (default 79). You can set it to 88, 100, or another value to suit your project’s style while remaining within PEP8 guidance.

Does it reorder imports or perform semantic changes?

Import-order normalization is optional in advanced mode. The tool does not perform semantic refactoring; it focuses strictly on style formatting while preserving original behavior.

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