Example of a well-factored Flask app?

gistfile1.txt

A Question
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Is there a good example of a well-factored Flask app that keeps its 
concerns nicely separated?

Admittedly I'm brand new and only really skimming the docs at this
point, but it seems like I *have* to instantiate a Flask app right
away so that I can use the @app.route decoration to set up routes
on view methods.

And it also seems like it wants me to lean on the magic 'g' globals
to get at a database connection that might not exist if I haven't
instantiated an app yet, which feel gross for testability.  The
module-level globalness of 'request' freaks me out a bit too.

I like to keep my models isolated from my persistence, and all of
that isolated from the app server, routing, request handling, etc.

On a somewhat related note, is it just me, or are the docs kind of
bad in spite of being rather copious?  I find them alternately too
simplistic or too obtuse/impractical.