def default_locale(obj):
    if hasattr(obj, 'get_fallback'):
        fallback = obj.get_fallback()
        if isinstance(fallback, models.Field):
            fallback = getattr(obj, fallback.name)
        return fallback
    else:
        return settings.LANGUAGE_CODE
implements the nth fibonacci value in a recursive exponential runtime
dataset/ETHPy150Open mozilla/addons-server/src/olympia/translations/forms.py/default_locale--crossover with--dataset/ETHPy150Open bt3gl/Python-and-Algorithms-and-Data-Structures/src/USEFUL/dynamic_programming/memo.py/find_fibonacci_seq_rec