In order reconnect to an exclusive queue, the client must reconnect with the same clientid. In the Python 0-8 and 0-9 client code, this is currently impossible as it does not allow the "instance" client property to be passed to the broker when performing the connection.start, and so the Broker assigns a random one.
This makes it impossible for the Python client users to use exclusive queues, which are integral to using durable subscriptions properly.
The 0-10 code does not have this problem.
The Python client (0-8..0-9 code paths) should be changed to allow the user to pass the client_properties, thus allowing them to specify the instance. We should also take this opportunity to pass the client version number.