If you run this
Branch.open(repository_location).repository.get_revision(revision_id).parent_ids
it will return the parent_ids of the specified revision_id.
How can I do this same thing, but instead of returning the parent_ids it returns the children_ids?
I looked through the different properties in the API and didn't find one for children.
The only way in which you can get this information is to scan all the revisions in the repository:
child_revids = {}
revs = r.get_revisions(r.all_revision_ids())
for rev in revs:
for parent_id in rev.parent_ids:
child_revids.setdefault(parent_id, []).append(rev.revision_id)
You probably want to avoid doing this if at all possible, since its performance scales with the size of the repository.