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 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.
