gallery.accords-library.com/server/szurubooru/search/criteria.py

class _BaseCriterion:
    def __init__(self, original_text):
        self.original_text = original_text

    def __repr__(self):
        return self.original_text


class RangedCriterion(_BaseCriterion):
    def __init__(self, original_text, min_value, max_value):
        super().__init__(original_text)
        self.min_value = min_value
        self.max_value = max_value

    def __hash__(self):
        return hash(('range', self.min_value, self.max_value))


class PlainCriterion(_BaseCriterion):
    def __init__(self, original_text, value):
        super().__init__(original_text)
        self.value = value

    def __hash__(self):
        return hash(self.value)


class ArrayCriterion(_BaseCriterion):
    def __init__(self, original_text, values):
        super().__init__(original_text)
        self.values = values

    def __hash__(self):
        return hash(tuple(['array'] + self.values))