We have not released anything for python3.9.

Release process is as follows:

1. Ensure all of our dependencies support python3.9 (not yet there)
2. Ensure our code works with all these dependencies on all supported versions of python (at the moment, at least gast needs additional support work).
3. Release nightly version supporting the new python version
4. Release a full release.

As we are already doing the 2.4 release, python3.9 support for TF will come in 2.5 release at the earliest.

@ravikyram, @amahendrakar, @rmothukuru let's deduplicate to this issue all py39 requests/issues. I'll monitor this one and provide updates as we start adding support.

@mihaimaruseac,
Sure

I may be wrong, but I believe this is the case:

python3.8 -m pipdeptree -p tensorflow | grep "^  -" | sed "s/  - //" | sed "s/ \[.*]//" | xargs python3.9 -m pip install

which is essentially

python3.9 -m pip install absl-py astunparse flatbuffers gast google-pasta grpcio h5py keras-preprocessing numpy opt-einsum protobuf six tensorboard tensorflow-estimator termcolor typing-extensions wheel wrapt

works fine for me. Am I missing anything?

(from #40840 (comment))

The main issue is that we also have C++ code and we need the needed dependencies to also upgrade for their C++ code. By this time, likely most are solved, so 2.5 release will have py3.9 support.

We should get py3.9 in nightly soon.

So, all of our depdencies have a release for py3.9 but our setup.py upper bounds to versions which are below that release. We will need to increase these bounds while making sure we don't break existing usecases/tests. Will slowly happen over December.