pythonimportpython-import

In Python, what's the purpose of giving an alias with the same name as the imported lib?

When I was reading the source code of aiohttp, I found the code below: click here for code

from .web_exceptions import (
    HTTPAccepted as HTTPAccepted,
    HTTPBadGateway as HTTPBadGateway,
    HTTPBadRequest as HTTPBadRequest,
    HTTPClientError as HTTPClientError,
    HTTPConflict as HTTPConflict,
    HTTPCreated as HTTPCreated,
    HTTPError as HTTPError,
...
)

I don't understand why we need a import A as A here. Are there any benefits?

Solution

  • Following the Git blame to the original commit, and following that to the pull request and associated issue, shows that this was to make mypy happy. mypy --strict didn't like the no-as form for re-exported imports.