flake8-kotoha 0.1.0

flake8 plugin to improve your type hints

flake8-kotoha

KoToHa: Kaizen Type Hint

Install

pipx

$ pipx install flake8
$ pipx inject flake8 flake8-kotoha
$ flake8 -h
...
Installed plugins: flake8-kotoha: 0.1.0, ...

venv + pip

$ python -m venv .venv --upgrade-deps
$ .venv/bin/python -m pip install flake8-kotoha
$ .venv/bin/flake8 -h
...
Installed plugins: flake8-kotoha: 0.1.0, ...

Usage

def plus_one(numbers: list[int]) -> list[int]:
    return [n + 1 for n in numbers]

$ flake8 example.py
example.py:1:14: KTH101 Type hint with abstract type `collections.abc.Iterable` or `collections.abc.Sequence`, instead of concrete type `list`

Error codes

Type hints in function parameters

Use abstract types instead of concrete ones

error code	description
KTH101	Use Iterable or Sequence instead of list
KTH102	Use Iterable or Sequence instead of tuple
KTH103	Use Iterable instead of set
KTH104	Use Iterable instead of dict