问题
Python 2.7.6, Google APIs Client Library for Python for Google App Engine, Google Developer's Guide
I'm going through the Google documentation, and trying to duplicate their example. When I run the command:
from google.appengine.ext import webapp
from Python Shell, I get the error msg:
No module named google.appengine.ext
So obviously, that file is not on my computer. I've done searches for the file on my hard drive and haven't found anything. I've run easy_install to install the Google API as instructed in the official Google Quick Start video. I'm not sure if Google's documentation is now outdated, or what is happening. Where do I get the google.appengine.ext? I'm assuming that my problem is simply that I don't have that module.
回答1:
You may need to add the following line, incase you are running stand alone tests
sys.path.append('/usr/local/google_appengine/')
sys.path.append('/usr/local/google_appengine/lib/yaml/lib/')
if 'google' in sys.modules:
del sys.modules['google']
回答2:
I've seen @varun answer in other question, and he use insert instead of append, and then this work perfectly, at least for me.
sys.path.insert(1, '<yourFolder>/google_appengine')
sys.path.insert(1, '<yourFolder>/google_appengine/lib/yaml/lib')
if 'google' in sys.modules:
del sys.modules['google']
回答3:
App Engine samples presume that you have the App Engine SDK installed:
https://developers.google.com/appengine/downloads
https://developers.google.com/api-client-library/python/start/installation#appengine
回答4:
The google.appengine.ext means google/appengine/ext it is just like the packages directory in Eclipse
来源：https://stackoverflow.com/questions/20878885/google-appengine-ext-python-module-importerror-no-module-named-google-appengine