Hi, I had a quick question (or 2) regarding the code here.

# Child is already in the open list 
    for open_node in open_list:
        if child == open_node and child.g > open_node.g:
            continue

In this snippet, i wanted to know that what exactly is the point of

child.g > open_node.g?

Also. Shouldn’t child.g = child.parent.g + 1 do the trick instead of child.g = current_node.g + 1