def get_extension(path):
    _, extension = os.path.splitext(path)
    return extension[1:]
Given a word stem, unstem() should return the most frequently- occurring
dataset/ETHPy150Open Lukasa/collectr/collectr/utils.py/get_extension--crossover with--dataset/ETHPy150Open davidmcclure/textplot/test/text/test_unstem.py/test_unstem