We currently test mod_wsgi with Python versions older than 3.7. There are a few changes required to test 3.7+:
- Switch the test OS for mod_wsgi testing to Amazon1-2018 (from RHEL6). Python 3.7+ can't be built on RHEL 6. The OpenSSL version is too old.
- Don't test mod_wsgi 3.x with Python 3.8+. It won't work due to PyInterpreterState API changes in CPython 3.8. Note this requires changes to the python driver toolchain.