google-api-python-client 2.0.2 is a roughly 10x increase in size over 1.12.8, when installed through pip.

To reproduce:
pip install google-api-python-client

Earlier version:
google-api-python-client==1.12.8

It's not a massive issue, but it's a surprising increase. In our case it broke a build + deploy to AWS Lambda by adding ~15Mb to the built package.