http://googleappengine.blogspot.com/2010/06/app-engine-sdk-135-released-with-new.html
""" in this release we’ve also added support for precompilation of Python source files to match the same feature we launched for Java last year. For Python, you can now use precompilation to speed up application loading time and to reduce CPU usage for new app instances. You can enable precompilation by including the following lines in your app.yaml file: derived_file_type: - python_precompiled This will start offline precompilation of Python modules used by your app when you deploy your application. Currently precompliation is off by default for Python applications, but it will be enabled by default in some future release. (Java precompilation has been enabled by default since the release of 1.3.1.) To give you a taste of what this feature is like, we tested this on a modified version of Rietveld (which included a copy of Django 1.0.4 in the app directory, and which did not use the datastore in its base url). The latency and CPU usage results for the initial load of the application, after uploading a new version of the app and requesting the homepage, were: Before precompilation enabled: Test 1: 1450ms 1757cpu_ms Test 2: 1298ms 1523cpu_ms Test 3: 1539ms 1841cpu_ms After precompilation enabled: Test 1: 805ms 669cpu_ms Test 2: 861ms 702cpu_ms Test 3: 921ms 803cpu_ms """ anyone tested this with web2py?