When we download the signed Python-3.10.0rc1.tgz or Python-3.10.0rc1.tar.xz source tarball, we see that the Docs/venv directory contains teh actual virtual environment with #!/home/pablogsal/github/python/3.10/3.10.0rc1/Python-3.10.0rc1/Doc/venv/bin/python3 shebangs.

That means, an attempt to build the documentation (e.g. with make html) will fail with:

PATH=./venv/bin:$PATH sphinx-build -b html -d build/doctrees   -W . build/html 
/bin/sh: ./venv/bin/sphinx-build: /home/pablogsal/github/python/3.10/3.10.0rc1/Python-3.10.0rc1/Doc/venv/bin/python3: bad interpreter: No such file or directory
make: Leaving directory '/builddir/build/BUILD/Python-3.10.0rc1/Doc'
make: *** [Makefile:51: build] Error 126

I believe the venv directory should not be part of the release tarball, especially since it is unusbale from different paths than pablogsal's github/python/3.10/3.10.0rc1/Python-3.10.0rc1 directory.

Also, technically the entire effective license of the tarball is now hard to determine, since it contains many different packages.