pyflakes

Autoflake removes unused imports and unused variables from Python code.

A tool to find common security issues in Python code.

A linting engine supporting custom project-specific rules.

Safe code refactoring for modern Python. Bowler is a refactoring tool for manipulating Python at the syntax tree level. It enables safe, large scale code modifications while guaranteeing that the resulting code compiles and runs. It provides both a simple command line interface and a fluent API in Python for generating complex code modifications in code.

A tool for measuring Python class cohesion.

Design by contract for Python. Write bug-free code. By adding a few decorators to your code, you get for free tests, static analysis, formal verification, and much more.

A tool for ensuring Python code is secure.

Dodgy is a very basic tool to run against your codebase to search for "dodgy" looking values. It is a series of simple regular expressions designed to detect things such as accidental SCM diff checkins, or passwords or secret keys hard coded into files.

A framework for creating lint rules and corresponding auto-fixes for source code.

IT, Inspector Tiger, is a modern python code review tool / framework. It comes with bunch of pre-defined handlers which warns you about improvements and possible bugs. Beside these handlers, you can write your own or use community ones.

Autocompletion/static analysis library for Python.

Parse lint errors and report them to Github as comments on a pull request.

Check McCabe complexity.

A static type checker that aims to combine the benefits of duck typing and static typing, frequently used with MonkeyType.

Find SQL injection vulnerabilities in Python code.

A tool for programmatically detecting common mistakes in Python code, such as references to undefined variables and type errors. It can be extended to add additional rules and perform checks specific to particular functions.

(Formerly pep8) Check Python code against some of the style conventions in PEP 8.

Check compliance with Python docstring conventions.

Looks for programming errors, helps enforcing a coding standard and sniffs for some code smells. It additionally includes pyreverse (an UML diagram generator) and symilar (a similarities checker).

A fast, scalable type checker for large Python codebases.

Static type checker for Python, created to address gaps in existing tools like mypy.

Rate how well a Python project complies with the best practices of the Python packaging ecosystem, and list issues that could be improved.

A tool based on Facebook's pyre-check to identify potential security issues in Python code identified with taint analysis.

A static analysis tool for detecting security vulnerabilities in Python web applications.

A static type analyzer for Python code.

A tool (and pre-commit hook) to automatically upgrade syntax for newer versions of the language.

A Python tool that computes various metrics from the source code.

A tool for refurbishing and modernizing Python codebases. Refurb is heavily inspired by clippy, the built-in linter for Rust.

Fast Python linter, written in Rust. 10-100x faster than existing linters. Compatible with Python 3.10. Supports file watcher.

A linter, formatter for finding and removing unused import statements.

Find unused classes, functions and variables in Python code.

The strictest and most opinionated python linter ever.

A command-line tool for archiving, exploring and graphing the complexity of Python source code.

Monitor code complexity using radon.

Symbolic execution engine for testing Python contracts.

DynaPyt is a framework for writing dynamic analyses for Python. The analyses can also modify runtime values to alter the execution.

Design-by-contract library supporting behavioral subtyping There is also a wider tooling around the icontract library such as a linter (pyicontract-lint) and a plug-in for Sphinx (sphinx-icontract).

Runtime Type Checking for Python 3.

Creates reports of over 400 rule patterns for feature detection (e.g. the use of cryptography or version control in apps).

Static code analysis for binary and source code - Java/Scala, PHP, Javascript, C#, PL/SQL, Python, T-SQL, C/C++, ObjectiveC/Swift, Visual Basic 6.0, Ruby, Delphi, ABAP, HTML5 and Solidity.

A linter and formatter to help you to improve copywriting, correct spaces, words, punctuations between CJK (Chinese, Japanese, Korean).

Statically generates a call graph image and displays it on screen.

Commercial Static Code Analysis which runs locally, but uploads the results to its cloud for presentation.

Commercial Static Code Analysis which doesn't require pre-compilation.

Structural source code analyzer by NASA's Jet Propulsion Laboratory.

Synopsys Coverity supports 20 languages and over 70 frameworks including Ruby on rails, Scala, PHP, Python, JavaScript, TypeScript, Java, Fortran, C, C++, C#, VB.NET.

A Github Action for linting C/C++ code integrating clang-tidy and clang-format to collect feedback provided in the form of thread comments and/or annotations.

Emerge is a source code and dependency visualizer that can be used to gather insights about source code structure, metrics, dependencies and complexity of software projects. After scanning the source code of a project it provides you an interactive web interface to explore and analyze your project by using graph structures.

Grep rough audit - source code auditing tool.

Lizard is an extensible Cyclomatic Complexity Analyzer for many programming languages including C/C++ (doesn't require all the header files or Java imports). It also does copy-paste detection (code clone detection/code duplicate detection) and many other forms of static code analysis. Counts lines of code without comments, CCN (cyclomatic complexity number), token count of functions, parameter count of functions.

Mega-Linter can handle any type of project thanks to its 70+ embedded Linters, its advanced reporting, runnable on any CI system or locally, with assisted installation and configuration, able to apply formatting and fixes

OpenStaticAnalyzer is a source code analyzer tool, which can perform deep static analysis of the source code of complex systems.

Code audit tool for Python and JavaScript. Wraps pycodestyle, pydocstyle, PyFlakes, Mccabe, Pylint, and more

A static file linter that allows you to write custom rules using regular expressions (RegEx).

A fast, open-source, static analysis tool for finding bugs and enforcing code standards at editor, commit, and CI time. Its rules look like the code you already write; no abstract syntax trees or regex wrestling. Supports 17+ languages.

Scan is a free open-source DevSecOps platform for detecting security issues in source code and dependencies. It supports a broad range of languages and CI/CD pipelines.

Sigrid helps you to improve your software by measuring your system's code quality, and then compares the results against a benchmark of thousands of industry systems to give you concrete advice on areas where you can improve.

Static Code Analysis for C/C++, Java, C#, Python, and RPG III and RPG IV versions (including free-form).

Static Reviewer executes code checks according to the most relevant Secure Coding Standards, OWASP, CWE, CVE, CVSS, MISRA, CERT, for 40+ programming languages, using 1000+ built-in validation rules for Security, Deadcode & Best Practices Available a module for Software Composition Analysis (SCA) to find vulnerabilities in open source and third party libraries.

Combination of multiple linters to install as a GitHub Action.

A commercial static analysis platform that allows for scanning of multiple languages (C/C++, Android, C#, Java, JS, PHP, Python, Node.JS, Ruby, Fortran, and Swift).

Tencent Cloud Code Analysis (TCA for short, code-named CodeDog inside the company early) is a comprehensive platform for code analysis and issue tracking. TCA consist of three components, server, web and client. It integrates of a number of self-developed tools, and also supports dynamic integration of code analysis tools in various programming languages.

Linter for integrating annotated TODOs with your issue trackers

Modern repositories include many technologies, each with its own set of linters. With 30+ linters and counting, Trunk makes it dead-simple to identify, install, configure, and run the right linters, static analyzers, and formatters for all your repos.

Code visualization tool that provides code analysis, standards testing, metrics, graphing, dependency analysis and more for Ada, VHDL, and others.