I tried to reproduce to file some bugs, but the docs Ron linked to and the datastore_test.py[1] they in turn link to don't do "import webtest", so I guess the docs have been updated recently.

A quick search suggests webtest is part of Pylons[2]. But Pylons isn't listed as a built-in third-party library[3]. So I'm not sure if there's anything to fix.

1. https://github.com/GoogleCloudPlatform/python-docs-samples/b... 2. http://docs.pylonsproject.org/projects/webtest/en/latest/ 3. https://cloud.google.com/appengine/docs/python/tools/built-i...