Example configs for mypy, interrogate, flake8 and pre-commit

.flake8

[flake8]
# see https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html#flake8
ignore=E203,W503
max-line-length=88
filename=*.py
exclude=.venv

.pre-commit.yaml

repos:
  - repo: https://github.com/psf/black
    rev: 22.6.0
    hooks:
      - id: black
        language_version: python3.10
  - repo: https://gitlab.com/pycqa/flake8
    rev: 4.0.1
    hooks:
      - id: flake8
  - repo: https://github.com/econchick/interrogate
    rev: 1.5.0
    hooks:
      - id: interrogate
        # don't pass filenames, this way interrogate runs for the whole dir
        # and uses the config in pyproject.toml, ignoring tests
        pass_filenames: false
  - repo: https://github.com/pre-commit/mirrors-mypy
    rev: v0.971
    hooks:
      - id: mypy
        pass_filenames: false
        language: system

pyproject.toml

[tool]
# ...

[tool.mypy]
disallow_untyped_defs=true
check_untyped_defs=true
follow_imports="normal"
warn_unused_ignores=true
warn_unreachable=true
pretty=true
plugins="pydantic.mypy, sqlalchemy.ext.mypy.plugin"

[tool.interrogate]
ignore-nested-classes = true
ignore-nested-functions = true
ignore-private = true
ignore-semiprivate = true
ignore-init-method = true
ignore-setters = true
ignore-property-decorators = true
verbose = 1
fail-under = 95