On Nov 5, 2011, at 5:24 PM, Massimo Di Pierro wrote: > I know I said otherwise before but perhaps we should continue to > default to 2.5 until App Launcher supports 2.7
I think so, yes. > > On Nov 5, 1:28 pm, Jonathan Lundell <jlund...@pobox.com> wrote: >> I thought I'd pass on my recent experience deploying an app to GAE with >> Python 2.7. My motivation was the new features available, in particular >> concurrent requests and WSGI operation, and secondarily some other >> performance improvements (like the native JSON library). >> Seehttp://code.google.com/appengine/docs/python/python27/newin27.htmlfor >> more info. >> >> There are a couple of downsides. >> >> 1. The App Launcher doesn't support 2.7 yet, so you need to deploy from the >> command line. I'm not entirely clear on whether there's any way at all to >> run a 2.7 app locally. >> >> 2. You must use the High Replication datastore. That's not necessarily a bad >> thing, but a) it's more expensive (if you have enough traffic to be paying), >> and b) run_in_transaction only works with ancestor queries, which the DAL >> does not support. >> >> Fortunately, my db requirements aren't too complicated, and I was able to >> put all my db accesses behind a class that allowed me to talk to the >> datastore through its native API while preserving compatibility with DAL on >> other servers. (There were some other advantages to doing this, and it was >> an interesting learning experience.) >> >> The trunk's app.example.yaml defaults to 2.7; that part was fairly simple >> (it supports 2.5 as well; just change some commenting-out stuff). >> >> I like the way GAE is going, and I really like being able to deploy an app >> in the cloud without having to become a sysadmin.
