Here's a quick rundown, you can pull a list of up to 200 "Ask HN" stories using this endpoint:

ask_stories = client.get_askstories()

then you have the ids and you can sort them reversed to catch the latest stories.

client.get_item(<id>) will give you the story's details, in which you'll find item['kids'], which are the IDs for the top-level comments. You can then loop through these comment IDs to get more info on each comment.

Another option is to use Algolia's API for HN. But that's not yet supported in my wrapper.