Which Python web framework is most like Ruby on Rails?

[Paul Rubin]

Paul Rubin <http://phr.cx@NOSPAM.invalid> writes:
> If the transactions are simple and low-latency, then it can be enough
> to have a single process own the whole database, and have every client
> send all its requests to the db process.

Meant to say: it can be enough to let the clients lock the database,
do their thing quickly, and release the lock.  What I described is of
course how it's usually done with SQL.  Sigh.  Other approaches
include running the whole app in one process (asyncore/twisted),
having a multi-threaded app where one thread owns the db and
serializes requests through Queues, etc.