A new App Engine datastore API

This post is primarily intended for App Engine users (and of those, only Python users :-).Over the past months I’ve been working on a new design for the Python datastore API, under the code name Datastore Plus. The new design is very ambitious, and changes a lot of things:New, cleaner implementations of Key, Model, Property and Query classesHigh-level asynchronous API using Python generators as coroutines (PEP 342)The design is meant to eventually replace the existing db package in the App Engine runtime library, but for now, it is just an open source project which you have to download and copy

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