Converting tree list to hierarchy dict

Question

I have a list of elements with attrs: parent, level, is_leaf_node, is_root_node, is_child_node.

I want to convert this list to hierarchy dict. Example of output dict:

Answer 1

Everything without a parent is your top level, so make those dicts first. Then do a second pass through your array to find everything with a parent at that top level, etc... It could be written as a loop or a recursive function. You really don't need any of the provided info besides "parent".