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copied!<p>Indeed you should not have to change imports in external libraries - though depending on your environment, you might even have too.</p> <h2>PYTHONPATH</h2> <p>Modifying your PYTHONPATH should suffice; PYTHONPATH should contain a 'lib' path that is either absolute or relative to your home, eg. </p> <p>Then you could simply do </p> <pre><code>from jinja2 import WHATEVER </code></pre> <h2>sys.path.append</h2> <p>Another way to go without PYTHONPATH is to use <code>sys.path.append()</code> and add your paths from your python code. I actually favor that, as it also allows to have per-application paths.</p> <h2>use virtualenv</h2> <p>Details would be a bit long to be put here, but please follow the <a href="http://pypi.python.org/pypi/virtualenv" rel="nofollow noreferrer">official doc</a></p> <p>These options applies to general python development rather than GAE specificities; if it does not work on your development machine you should post more details (exact imports, absolute paths, pythonpath...).</p> <p>A proper project structure and use of appcfg.py should workout dependencies when uploading to google: please take a look at this good answer: <a href="https://stackoverflow.com/questions/4863557/how-do-i-manage-third-party-python-libraries-with-google-app-engine-virtualenv/4863970#4863970">How do I manage third-party Python libraries with Google App Engine? (virtualenv? pip?)</a> and follow those guidelines.</p> <p>A nice way to go with GAE is through yaml application directives. Please take a look at the doc for includes: <a href="http://code.google.com/appengine/docs/python/config/appconfig.html#Includes" rel="nofollow noreferrer">http://code.google.com/appengine/docs/python/config/appconfig.html#Includes</a></p> <p><strike>Also remember that GAE <a href="http://code.google.com/appengine/docs/python/overview.html" rel="nofollow noreferrer">officially supports</a> python 2.5, and 2.7 support <a href="http://code.google.com/appengine/docs/python/gettingstartedpython27/" rel="nofollow noreferrer">is experimental</a></strike></p> <p><em>Python 2.7 is now <a href="https://developers.google.com/appengine/docs/python/python27/" rel="nofollow noreferrer">officially supported</a></em></p>

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