use-types-from-typing¶

Collection: fixit Autofix: Yes Python: `< 3.10`

Enforces the use of types from the typing module in type annotations in place of builtins.{builtin_type} since the type system doesn’t recognize the latter as a valid type before Python 3.10.

Valid examples¶

def function(list: List[str]) -> None:
    pass

def function() -> None:
    thing: Dict[str, str] = {}

def function() -> None:
    thing: Tuple[str]

from typing import Dict, List
def function() -> bool:
        return Dict == List

from typing import List as list
from graphene import List

def function(a: list[int]) -> List[int]:
        return []

Invalid examples¶

from typing import List
def whatever(list: list[str]) -> None:
    pass

Suggested fix

from typing import List
def whatever(list: List[str]) -> None:
    pass

def function(list: list[str]) -> None:
    pass

def func() -> None:
    thing: dict[str, str] = {}

def func() -> None:
    thing: tuple[str]

from typing import Dict
def func() -> None:
    thing: dict[str, str] = {}

Suggested fix

from typing import Dict
def func() -> None:
    thing: Dict[str, str] = {}