On Tue, Nov 4, 2008 at 9:48 AM, Kannaiyan <[EMAIL PROTECTED]> wrote: > We need to have a smart way of maintaining versions. > What if Google Upgrades the version of Python Intrepreter to a higher > version when the code is written for lower version? >
Runtime environments are versioned, and you control which version your app uses in the app.yaml configuration file. Right now, there is only one version of the Python runtime: 1. Changes made to an existing version of the runtime environment are intended to be backwards compatible. If there is ever a non-backwards compatible change, it will be released in a new version of the runtime. When a new version of the runtime is released, an app will continue to use the original version until the app owner changes the app.yaml file. The biggest example of this would be upgrading Python itself. Version 1 of the runtime uses Python 2.5. If App Engine were to support a later version of Python, it would have to be in a later version of the runtime environment. You wouldn't want the version of the Python language to change automatically. Upgrading an app to a new runtime environment is likely to be non-trivial for everyone, so it's better if new non-backwards compatible versions are few and far between. This is one of many reasons you don't want lots of libraries bundled with the runtime. Consider that the runtime bundles Django 0.96; updating this to Django 1.0 would require a new version of the runtime. I'd recommend to anyone wanting to use Django on App Engine to add Django 1.0 to their app instead of using the bundled 0.96 and waiting for a new version of the runtime. Thankfully, this is easy to do. > What happens if there is a bug (BETA) in GData module and the website > is not updated with that gdata update. > It sounds like you're asking about what would happen if we bundled the GData library in the runtime, and a bug were discovered in the library. In this case, if the bug fix is backwards compatible, the library would be upgraded in place with a minor release of the runtime environment, and all apps using that version of the runtime would see the fix automatically, just as with fixes in the API libraries. -- Dan --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
