flake8
Modular Python linter combining PEP 8 style checking, PyFlakes and complexity analysis.
Linting and formatting PyPI MIT
Used in agent projects
64
0.5% of 12,697 public repos built with AI coding agents
Rank in linting and formatting
#14 of 40
by use in those projects
Downloads
9.5M
PyPI, last 7 days, flake8
GitHub stars
3,827
last push Oct 8, 2026
How flake8 is used
flake8 is a dependency in 64 of the 12,697 public GitHub projects set up for AI coding agents that we scanned (0.5%), #14 of 40 in linting and formatting. The most used alternative there is ESLint. Projects that use it most often also use pytest (92.2%), Black (90.6%), python-dotenv (71.9%).
Often used with flake8
| pytest | 92.2% of flake8 projects · 35.5× more than average |
|---|---|
| Black | 90.6% of flake8 projects · 106.5× more than average |
| python-dotenv | 71.9% of flake8 projects · 11.0× more than average |
| Requests | 64.1% of flake8 projects · 12.1× more than average |
| Uvicorn | 56.2% of flake8 projects · 13.1× more than average |
| NumPy | 56.2% of flake8 projects · 14.7× more than average |
| Pydantic | 56.2% of flake8 projects · 11.0× more than average |
| mypy | 50.0% of flake8 projects · 105.8× more than average |
By coding agent
| GitHub Copilot | 0.9% of projects set up for it |
|---|---|
| Claude Code | 0.5% of projects set up for it |
| Cursor | 0.4% of projects set up for it |
Share of public repos configured for each agent that list flake8 as a dependency.
Install
| Package | pip install flake8 |
|---|---|
| Main stacks | Python (61), Other (2), Next.js (1) |
| Example projects | mikegianfelice/Hunter, neurobloomai/pact-ax, mdlmarkham/TailOpsMCP, bloodbee/pump-fun-sniper-bot, gabrielfior/solana-analytics-101 |
Alternatives to flake8
| Tool | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|
| ESLint npm Linter that finds and fixes JavaScript code patterns based on AST analysis. |
4,833 (38.1%) | 162M | 27.6K | MIT |
| Prettier npm Opinionated code formatter for JavaScript, TypeScript, and related languages. |
2,218 (17.5%) | 138M | 52.4K | MIT |
| Biome npm Fast web toolchain providing linting, formatting and code quality all in one. |
445 (3.5%) | 17.7M | 25.9K | MIT OR Apache-2.0 |
| oxlint npm Fast JavaScript linter written in Rust with zero-config defaults. |
206 (1.6%) | 25.7M | 23K | MIT |
| Knip npm Find and fix unused dependencies, exports and files in TypeScript/JavaScript projects. |
150 (1.2%) | 17.5M | 12.4K | ISC |
| stylelint npm Linter that finds and fixes CSS errors and enforces code style conventions. |
140 (1.1%) | 10.8M | 11.5K | MIT |
| oxfmt npm Fast JavaScript formatter from the Oxc compiler project. |
125 (1.0%) | 16.3M | 23K | MIT |
| ESLint Import Resolver TypeScript npm ESLint plugin resolver adding TypeScript support to import/export linting. |
119 (0.9%) | 48.8M | 825 | ISC |