List directory tree structure sorted by file size using Python Based on http://stackoverflow.com/questions/9727673/list-directory-tree-structure-using-python

list_files.py

def list_files(startpath):
    for root, dirs, files in os.walk(startpath):
        level = root.replace(startpath, '').count(os.sep)
        indent = ' ' * 4 * (level)
        print('{}{}/'.format(indent, os.path.basename(root)))
        subindent = ' ' * 4 * (level + 1)
        for f in sorted(files, key=lambda f: os.path.getsize(root + os.sep + f)):
            print('{}{} - {}B'.format(subindent, f, os.path.getsize(root + os.sep + f)))