问题:

Using google-app-engine tutorial, I got the following error stack message:

Traceback (most recent call last): File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 239, in Handle handler = _config_handle.add_wsgi_middleware(self._LoadHandler()) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 298, in _LoadHandler handler, path, err = LoadObject(self._handler) File "C:\Program Files (x86)\Google\google_appengine\google\appengine\runtime\wsgi.py", line 84, in LoadObject obj = __import__(path[0]) File "D:\Dev\SandBoxes\web\omaha\omaha.py", line 4, in  import jinja2 ImportError: No module named jinja2

Even though I declared it in the libraries from app.yaml:

application: *** version: 1 runtime: python27 api_version: 1 threadsafe: true  libraries: - name: jinja2   version: latest - name: webapp2   version: latest   handlers: - url: /css   static_dir: css - url: /js   static_dir: js - url: /img   static_dir: img - url: /.*   script: omaha.application

Has anyone had a similar problem?

回答1:

In order to use Jinja locally, you need to install it locally

easy_install Jinja2

pip install Jinja2

回答2:

Need to restart application in AEL.

The application in Google App Engine Launcher must be restarted for new library calls to be taken into account. I was mislead by the fact all other changes dont need actual restart of the server.

回答3:

You may not have added the following lines to app.yaml:

- name: jinja2   version: latest

回答4:

Even though it's declared in your libraries it doesn't necessarily mean the dev app server can find the library within the appengine sdk.

Since you're running the tutorial, I'm assuming you are running the application from googles app engine launcher. Within the laucher go into "Edit" >> "Prefences" and set your Python Path and SDK Path.

回答5:

Use these commands to get pip and Jija2 installed for Python 3:

sudo apt-get install python3-pip sudo pip3 install Jinja2

转载请标明出处:ImportError: No module named jinja2

文章来源: ImportError: No module named jinja2

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jinja2

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runtime