[BUG] Flytekit type hints are ignored by mypy

[tekumara]

Describe the bug

Flytekit type hints are ignored by mypy because flytekit does not have a py.typed marker as per PEP 0561

Expected behavior

Usage of flytekit is checked against its types.

Additional context to reproduce

Given

from typing import Dict, List, NamedTuple

from flytekit import task


class OpenFlightsData(NamedTuple):
    routes: List[Dict[str, str]]
    airlines: Dict[str, str]
    airports: Dict[str, Dict[str, str]]


@task()
def extract_reference_data() -> OpenFlightsData:
    return OpenFlightsData(
        routes=[{"MAO": "CIZ"}], airlines={"0B": "Blue Air"}, airports={"AAA": {"lat": "1", "lon": "2"}}
    )

Then when running mypy 1.3.0:

❯ mypy aircraft/test.py
aircraft/test.py:3: error: Skipping analyzing "flytekit": module is installed, but missing library stubs or py.typed marker  [import]
aircraft/test.py:3: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
Found 1 error in 1 file (checked 1 source file)

Screenshots

No response

Are you sure this issue hasn't been raised already?

• Yes

Have you read the Code of Conduct?

• Yes

[eapolinario]

flyteorg/flytekit#1711 is the first change to address this.

[github-actions]

Hello 👋, this issue has been inactive for over 9 months. To help maintain a clean and focused backlog, we'll be marking this issue as stale and will engage on it to decide if it is still applicable.
Thank you for your contribution and understanding! 🙏