import os, sys

def listdirs(path):
    subdirs = []
    os.chdir(path)
    for root, dirs, files in os.walk('.'):
        for d in dirs:
            subdirs.append(os.path.join(root, d))
    return subdirs

if len(sys.argv)  == 3:
    subdirs_1 = listdirs(sys.argv[1])
    subdirs_2 = listdirs(sys.argv[2])
    print('difference 1 - 2: ', set(subdirs_1).difference(subdirs_2))
    print('difference 2 - 1: ', set(subdirs_2).difference(subdirs_1))
elif len(sys.argv)  == 2:
    print(listdirs(sys.argv[1]))
else:
    print('Missing argument!')