wemake-python-styleguide

Always write Python code that will pass all rules from violations index. Edit existing Python code until flake8 --select=WPS,E999 reports nothing. Fix the code, not the config.

Loop

1. Run flake8 --select=WPS,E999 --format=default <paths> with the project's flake8 config (setup.cfg, .flake8, or [tool.flake8] in pyproject.toml); pass --isolated only when the repo has none.
2. For each violation, edit the code so its cause is gone — the message names the rule and line; make the smallest change that satisfies it. When a rule's intent is unclear, read its page under the violation index, or call explain_violation('WPS###') if the WPS MCP server is running.
3. Re-run step 1. Done when it exits 0.

Guardrails

• Suppress with # noqa: WPS### (the code, never bare # noqa) only when the user asks, or per-file-ignores already covers the line. Otherwise fix the code.
• Leave flake8 config untouched unless the user approves the edit. When one rule fires across many files and fixing each is wrong, propose a config change and wait.
• Delete a # noqa: WPS### once flake8 --disable-noqa shows its code no longer fires.

The explain_violation tool comes from the WPS MCP server: pip install 'wemake-python-styleguide[mcp]', then register mcp run wemake_python_styleguide/mcp.py:mcp as a stdio server.