Docs say requires python 3.5 but "protobuf requires Python '>=3.7'"

[zstern]

Created an environment for python 3.5 but it cant install a compatible version of protobuf

[EthonWang]

I user python3.5 and face the same error like you.
pip install --upgrade protobuf==3.20.1
This is useful.

[benoit9126]

The next release should be 2.0.0 and Python 3.7 will be the oldest supported Python version. Protobuf 4.21 will be required. The doc will be updated too.