Official support for python 3.9

First check

• I added a very descriptive title to this issue.
• I used the GitHub search to find a similar issue and didn’t find it.
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Description

FastAPI officially declares support for python up to version 3.8. This holds true in pyproject.toml and in declaration of tested python versions.

At the same time, FastAPI installs on python 3.9 and works without problem.

The solution you would like

• Extend tests to include also python 3.9
• Declare support for python 3.9 in pyproject.toml, so that on https://pypi.org/project/fastapi/ it shows support for it.

Additional context

There are also docker images for FastAPI such as tiangolo/uvicorn-gunicorn-fastapi-docker which currently declare support up to python 3.8 and not for python 3.9.

Anyway, these things can go it’s own upgrade path.

[nilansaha]

Any update on this ?

[vlcinsky]

In package metadata at https://github.com/tiangolo/fastapi/blob/master/pyproject.toml#L31 is python 3.9 compatibility declared.

Test suite https://github.com/tiangolo/fastapi/blob/master/.github/workflows/test.yml#L13 covers python 3.9 too.

PR #2298 is merged and is awaiting next release, changelog already declares 3.9 compatibility in release notes in section “Latest changes”.

Closing.