Arguments
The keys of the sets to compare.
Whether to include scores in the result.
Response
The number of elements in the resulting set.
redis.zadd("key1", {"a": 1, "b": 2, "c": 3})
redis.zadd("key2", {"c": 3, "d": 4, "e": 5})
result = redis.zdiff(["key1", "key2"])
assert result == ["a", "b"]