In my experience, even if the ORG or TEAM does not adopt the policy of adding type annotations, I just do it anyways. They might not use mypy, but I do. One ca

In my experience, even if the ORG or TEAM does not adopt the policy of adding type annotations, I just do it anyways. They might not use mypy, but I do. One caveat is I've stopped adding type annotations for anything but the most latest Python versions. Mainly because I got tired of having to deal with importing modules for things like unions, or whatever container types... all of that should be in the core language, and in more recent python that is happening.