Fail to import ServiceAccountCredentials within GAE endpoint tool

I am generating some GAE endpoints library. When running endpoints tool(endpointscfg.py get_client_lib ... ), gcloud import fails. Third party libraries are bundled with GAE project, and oauth2client-2.0.1 is actually exists in library directory.

Affecting versions: 0.10 and above

Traceback (most recent call last):
  File "/usr/local/bin/endpointscfg.py", line 133, in <module>
    run_file(__file__, globals())
  File "/usr/local/bin/endpointscfg.py", line 129, in run_file
    execfile(_PATHS.script_file(script_name), globals_)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/endpointscfg.py", line 561, in <module>
    main(sys.argv)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/endpointscfg.py", line 557, in main
    args.callback(args)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/endpointscfg.py", line 426, in _GetClientLibCallback
    hostname=args.hostname, application_path=args.application)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/endpointscfg.py", line 388, in _GetClientLib
    application_path=application_path)
  File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/endpointscfg.py", line 187, in GenApiConfig
    module = __import__(module_name, fromlist=base_service_class_name)
  File "/Users/kang/jackend/main.py", line 10, in <module>
    from auth.services import JackEndAuthAPI
  File "/Users/kang/jackend/auth/services.py", line 12, in <module>
    from . import (
  File "/Users/kang/jackend/auth/storage.py", line 9, in <module>
    from ext import cloudstorage as storage
  File "/Users/kang/jackend/ext/cloudstorage.py", line 9, in <module>
    from gcloud import (
  File "/Users/kang/jackend/lib/gcloud/storage/__init__.py", line 45, in <module>
    from gcloud.storage.client import Client
  File "/Users/kang/jackend/lib/gcloud/storage/client.py", line 19, in <module>
    from gcloud.client import JSONClient
  File "/Users/kang/jackend/lib/gcloud/client.py", line 17, in <module>
    from oauth2client.service_account import ServiceAccountCredentials
ImportError: cannot import name ServiceAccountCredentials

[ghost]

My appengine_config.py looks like this now:

"""
`appengine_config.py` is automatically loaded when Google App Engine
starts a new instance of your application. This runs before any
WSGI applications specified in app.yaml are loaded.
"""

import sys
from google.appengine.ext import vendor

# Third-party libraries are stored in "lib", vendoring will make
# sure that they are importable by the application.
vendor.add('lib')

def unload_module(module_name):
    target_modules = [m for m in sys.modules if m.startswith(module_name)]
    for m in target_modules:
        if m in sys.modules:
            del sys.modules[m]

unload_module('oauth2client')
unload_module('pyasn1_modules')

This workaround would be useful for swapping GAE provided libraries.

[theacodes]

Great.

The long and short is that app engine is barrels of fun when it comes to user-provided newer versions of bundled libraries.