对同一nam的多个键进行过滤时出现的问题

Question

所以我想实现一个过滤器，它检查输入并匹配过滤器参数中提供的逻辑

import operator


class InvalidQuery(Exception):
    pass


class Filter(object):
    binary_operators = {
        u"==": operator.eq,

        u"<": operator.lt,

        u">": operator.gt,

        u"<=": operator.le,

        u">=": operator.ge,

        u"!=": operator.ne,
    }

    multiple_operators = {
        u"or": any,
        u"and": all,
    }

    def __init__(self, tree):
        self._eval = self.build_evaluator(tree)

    def __call__(self, **kwargs):
        return self._eval(kwargs)

    def build_evaluator(self, tree):
        try:
            operator, nodes = list(tree.items())[0]
        except Exception:
            raise InvalidQuery("Unable to parse tree %s" % tree)
        try:
            op = self.multiple_operators[operator]
        except KeyError:
            try:
                op = self.binary_operators[operator]
            except KeyError:
                raise InvalidQuery("Unknown operator %s" % operator)
            assert len(nodes) == 2 
            def _op(values):
                return op(values[nodes[0]], nodes[1])
            return _op

        elements = [self.build_evaluator(node) for node in nodes]
        return lambda values: op((e(values) for e in elements))


x = Filter({"and": (
    {"==": ("y", "abc")},
    {"==": ("y", "qwerty")},
)})


print(x(y='abc', y='qwerty'))

这项工作：

print(x(y='abc'))

这并不是：

print(x(y='abc', y='qwerty'))

我要做的是将逻辑传递给构造函数，并希望在传递给方法的输入上运行逻辑。 输入可以有多个具有相同名称和不同值的键。 请帮忙。 谢谢