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copied!<p>App Engine runs Python code in a sandbox, and only authorized standard library modules & packages can be imported from your application.</p> <p>as @mg has mentioned, if you want to allow for 3rd-party modules & packages, you need to bundle them with your application. to do that specifically for feedparser, just drop the <code>feedparser.py</code> file into your top-level App Engine directory (where your <code>app.yaml</code>, <code>index.yaml</code>, and <code>main.py</code> are located).</p> <p>(UPDATED Oct 2011) also keep in mind the hard limits:</p> <ul> <li>max total number of files (app files and static files): 3,000 (upped to 10k in 1.5.5, Oct 2011)</li> <li>max size of an application or static file: 10MB (upped to 32MB in 1.5.5)</li> <li>max total size of all application and static files: 150MB</li> </ul> <p>if you want to save on the total number of files, you can put a wad of <code>.py</code> files in a ZIP so you only pay for one file. although this article is slightly out-of-date -- recommending bundling of Django 1.0 which is now included -- the technique of bundling modules & packages into ZIP files still apply:</p> <p><a href="http://code.google.com/appengine/articles/django10_zipimport.html" rel="nofollow noreferrer">http://code.google.com/appengine/articles/django10_zipimport.html</a></p> <p>Official page in the docs which discusses the file limitations:</p> <p><a href="http://code.google.com/appengine/docs/python/runtime.html#Pure_Python" rel="nofollow noreferrer">http://code.google.com/appengine/docs/python/runtime.html#Pure_Python</a></p> <p>(UPDATED Nov 2011): The link below features a list of whitelisted Python modules/packages with C code for 2.5. The Python 2.7 runtime frees up many restrictions so much so that the whitelist has become a blacklist. Here are the allowed/whitelisted 2.5 C modules as well as the disallowed/blacklisted 2.7 C modules:</p> <p><a href="http://code.google.com/appengine/kb/libraries.html" rel="nofollow noreferrer">http://code.google.com/appengine/kb/libraries.html</a></p>

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