def calc_sign(string):
    return str(hashlib.md5(str(string).encode('utf-8')).hexdigest())

#----------------------------------------------------------------------
Get all the ancestors
dataset/ETHPy150Open cnbeining/Biligrab/biligrab.py/calc_sign--crossover with--dataset/ETHPy150Open biocore/scikit-bio/skbio/tree/tests/test_tree.py/TreeTests.test_ancestors