# hubspot-api-python: paginating associations with `batch_api.read` silently loops forever

## What's going on

I am trying to pull more than 100 results from `associations.batch_api.read` in hubspot-api-python. The function does not seem to support pagination: the API response has no `paging` key I can use, and when I try passing an `after` cursor like `BatchInputPublicObjectId(inputs=[{'id': from_object_id, 'after': after}])` it silently returns the same page, which puts my loop into an infinite cycle. How do I actually paginate associations?

## The verified fix

The v3 `associations.batch_api.read` does not support pagination at all. Passing `after` is silently ignored because the `BatchInputPublicObjectId` model has no `after` field, which is exactly what causes the infinite loop you are seeing. The maintained answer: switch to the v4 associations API, `api_client.crm.associations.v4.basic_api.get_page(...)`, which supports `after`, `limit`, and real paging. One quirk to know: in v4 the `paging` key is only present in the response when there are more pages, so absence of `paging` means you are on the last page.

Source: https://github.com/HubSpot/hubspot-api-python/issues/187

## How to use this

Take the question above and check if it matches what you're seeing. If it does, work through the verified fix step by step. Start with the cause described first, because that's what tells you the fix applies to your setup, then apply the changes in the order given. Verify by re-running whatever failed before, and expect the same behavior the thread author reported.