So x is the value I am looking for in the nested list t. I understand what happens throughout the code and the list comprehension, what I do not understand is at what point does [5] become path, then [3,5] becomes path and finally [1,3,5] gets returned to show the final path of values. def findPath(t, x): if t[0] == x: return [t[0]] for path in [findPath(branch, x) for branch in t[1:]]: if path: return [t[0]] + path t = [1, [3, [4], [5]], [2]] findPath(t, 5) #returns [1,3,5] findPath(t, 2) #returns [1 ,2] Here is a link that helped me understand step by step, I just don't understand how the list becomes the path ultimately returning [t[0]] + path. Continue reading...
