http://c2.com/cgi/wiki?DontRepeatYourself
This is nice to represent here. Hope you guys can understand. On Nov 4, 11:33 am, Dan Sanderson <[EMAIL PROTECTED]> wrote: > 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 -~----------~----~----~----~------~----~------~--~---
