Support for Python3?

[rjjanuary]

Has anyone successfully authenticated to GA with Python 3?
I can't get past errors such as:
2019-10-22T14:00:00+00:00 [running]> on host 13ae1e54de4e [2019-10-22 15:21:35,158] {{logging_mixin.py:95}} INFO - [�[34m2019-10-22 15:21:35,156�[0m] {{�[34m__init__.py:�[0m44}} WARNING�[0m - file_cache is unavailable when using oauth2client >= 4.0.0 or google-auth�[0m �[31mTraceback (most recent call last): File "/usr/local/airflow/.local/lib/python3.7/site-packages/googleapiclient/discovery_cache/__init__.py", line 36, in autodetect from google.appengine.api import memcache ModuleNotFoundError: No module named 'google.appengine'

Looking further into it, google.appengine is deprecated and google cloud should be used instead.
Is there anything I'm missing?