redis.zadd("key1", {"a": 1, "b": 2, "c": 3})

redis.zadd("key2", {"c": 3, "d": 4, "e": 5})

result = redis.zinterstore("dest", ["key1", "key2"])

assert result == 1

redis.zadd("key1", {"a": 1, "b": 2, "c": 3})

redis.zadd("key2", {"a": 3, "b": 4, "c": 5})

result = redis.zinterstore("dest", ["key1", "key2"], withscores=True, aggregate="SUM")

assert result == 3

redis.zadd("key1", {"a": 1})

redis.zadd("key2", {"a": 1})

result = redis.zinterstore("dest", ["key1", "key2"],
                      withscores=True,
                      aggregate="SUM",
                      weights=[2, 3])

assert result == 1