from google.appengine.ext import testbed
  File "/usr/local/google_appengine/google/appengine/ext/testbed/__init__.py", line 120, in <module>
    from google.appengine.api import urlfetch_stub
  File "/usr/local/google_appengine/google/appengine/api/urlfetch_stub.py", line 34, in <module>
    _fancy_urllib_InvalidCertException = fancy_urllib.InvalidCertificateException
AttributeError: 'module' object has no attribute 'InvalidCertificateException'