Attachment IDs in create conversations

[joshdeutsch]

In conversations.py create_conversation(), you get a 500 response when including attachment_ids. After contacting canvas support, it turned out that the issue was that the translation to the http request required '[]' after attachment_ids. Please see this thread. At the moment the work around is to add the attachment_ids with [] using kwargs. This seems to me to be a bug on the canvas side but to make this function usable, it'd be good to modify create_conversation() to follow this [] requirement.

[jullrich]

I realize this is an old issue, but for others like me ending up here after Googleing: it appears (fixed. Make sure you are actually sending a list of attachment IDs:
attachment_ids=(123,)
This will make sure the [] is added, and you don't get a 500 error.