How do I implemet an Hierarchical Tree using python?

Question

I'm working on a project that need to return a list of all the leafs (files) in a Tree. I don't know how to start and I need some help :)

I need to create a program that return all the files and folders in a current folder that running a process (my_program.py), the results should contain the root folder, files, subfolders and subfolders.files etc....

Answer 1

import os
##Provide value of a path in filepath variable
filepath="C:\Users\poonamr\Desktop"
for path, dirs, files in os.walk(os.path.abspath(filepath)):
    print path
    if len(dirs)==0:
        print('No directories available in "' + path + '"')
    else:
        print dirs
    if len(files)==0:
        print('No files available in "' + dirs + '"') 
    else:
        print files
    print "\n"