Mypy¶

Mypy is a static type checker for Python.

Configuration dans un projet¶

pyproject.toml

[tool.mypy]
packages = ["src", "tests"]
cache_dir = "/dev/null"     # Linux
# cache_dir = "nul"         # Windows
mypy_path = "stubs"
ignore_missing_imports = true

Configuration globale¶

~/.mypy.ini

[mypy]
ignore_missing_imports = true

Utilisation¶

Générer les stubs du projet¶

stubgen src --output stubs

Lancer le linter¶

mypy

Utilisation avec pre-commit¶

Configuration¶

.pre-commit-config.yaml

repos:
  - repo: https://github.com/pre-commit/mirrors-mypy
    rev: v1.13.0
    hooks:
      - id: mypy
        args: ["--config-file", "pyproject.toml"]
        additional_dependencies:
          [
            # Same dependencies as in 'pyproject.toml'.
          ]

Utilisation¶

pre-commit run --all-files mypy

Intégration à Visual Studio Code¶

.vscode/extensions.json

{
    "recommendations": [
        "ms-python.mypy-type-checker",
    ],
}

.vscode/settings.json

{
    "mypy-type-checker.path": [
        "${workspaceFolder}/venv/bin/mypy"                 // Linux
        // "${workspaceFolder}\\venv\\Scripts\\mypy.exe"   // Windows
    ],
    "mypy-type-checker.interpreter": [
        "${workspaceFolder}/venv/bin/python"               // Linux
        // "${workspaceFolder}\\venv\\Scripts\\python.exe" // Windows
    ],
}

Ressources¶

mypy documentation