The infra_clients module is for client libraries that interacts with APIs of various infra services like buildbucket, Swarming, Isolate, Reitveld codereview, etc.
It depends on the sibling libs and gae_libs.
Create symbolic links to infra_clients, gae_libs and libs in the same directory PARENT_DIR, and ensure that PARENT_DIR is added to sys.path or PYTHONPATH.
The usage would look like:
from infra_clients import INFRA_SERVICE_API