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Asked: 2026-05-14T20:52:40+00:00

I am developing an app for GAE. Having installed the feedparser module with setuptools,

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I am developing an app for GAE.

Having installed the “feedparser” module with setuptools, I tried importing it (with “import feedparser”) statement. However, the module does not load and when I look at the dev_appserver.py debug log on screen, I see the following:

Access to module file denied: /usr/local/lib/python2.6/dist-packages/feedparser-4.1-py2.6.egg/feedparser.py

So GAE dev server cannot access the module but I can’t figure out why. The path is correct and the file is accessible.

I am fairly new to Python/Django/GAE – what am I missing?

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1 Answer

  1. Editorial Team

    App Engine runs Python code in a sandbox, and only authorized standard library modules & packages can be imported from your application.

    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 feedparser.py file into your top-level App Engine directory (where your app.yaml, index.yaml, and main.py are located).

    (UPDATED Oct 2011) also keep in mind the hard limits:

    • max total number of files (app files and static files): 3,000 (upped to 10k in 1.5.5, Oct 2011)
    • max size of an application or static file: 10MB (upped to 32MB in 1.5.5)
    • max total size of all application and static files: 150MB

    if you want to save on the total number of files, you can put a wad of .py 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 although this article is slightly out-of-date — recommending bundling of Django 1.0 which is now included — the technique of bundling modules & packages into ZIP files still apply:

    http://code.google.com/appengine/articles/django10_zipimport.html

    Official page in the docs which discusses the file limitations:

    http://code.google.com/appengine/docs/python/runtime.html#Pure_Python

    (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:

    http://code.google.com/appengine/kb/libraries.html

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