Does pyax do batching ?

Yes, pyax definitely does batching, and in fact has a batch object for this purpose.

Your best bet is to get the tarball release and unpack it so you can have a look inside. Within the top dir of the unpacked tarball, navigate to pyax/tests and look at demo.py. This has two main demos, single-object and batch.

In a nutshell, you can create a batch of an object by providing a list of dictionaries to the create call.

Queries and retrieves automatically return batches.

Batches can be updated, upserted and deleted, affecting all objects in the batch.

Batches are ordered dictionaries, keyed by the sobject id, but maintain the order the objects were added in (important, say, if your query specifies an ordering).