def levenshtein_similarity(string1, string2):
    return 1 - levenshtein(string1, string2) / float(max(len(string1),  len(string2), 1.0))
The named arguments must be copied, not passed by reference.
dataset/ETHPy150Open clips/pattern/pattern/metrics.py/levenshtein_similarity--crossover with--dataset/ETHPy150Open 2degrees/django-wsgi/tests/test_middleware.py/TestRoutingArgs.test_named_arguments_are_copied