Static configs

mypy.ini

# dmypy start -- --config-file mypy.ini -m fastapi -m pydantic -m starlette ; dmypy check backend/app/app
[mypy]
plugins = sqlmypy,backend/app/pydanticmypy.py:strict

follow_imports = silent
strict_optional = True
warn_redundant_casts = True
warn_unused_ignores = True
disallow_any_generics = True
check_untyped_defs = True
ignore_missing_imports = True

# for strict mypy: (this is the tricky one :-))
disallow_untyped_defs = True

pyproject.toml

# ...

[tool.black]
line-length = 120
target_version = ['py37']
include = '\.pyi?$'
exclude = '''
(
  /(
    \.git
    | \.mypy_cache
    | \.pytest_cache
    | htmlcov
    | build
    | pybind11
  )/
)
'''

[tool.isort]
line_length = 120
multi_line_output = 3
include_trailing_comma = true
force_grid_wrap = 0
combine_as_imports = true

setup.cfg

[tool:pytest]
testpaths = tests/local
timeout = 10

[coverage:run]
source = app
branch = True

[coverage:report]
precision = 2
exclude_lines =
    pragma: no cover
    raise NotImplementedError
    raise NotImplemented
    if TYPE_CHECKING:
    @overload

[flake8]
max-line-length = 120
ignore = E203,W503,F821
recursive = True