# SUNION

> Return the union between sets

## Arguments

<ParamField body="keys" type="*List[str]" required>
  The keys of the sets to perform the union operation on.
</ParamField>


## Response

<ResponseField type="set[str]" required>
  The resulting set
</ResponseField>

<RequestExample>
```py Example 
redis.sadd("key1", "a", "b", "c")

redis.sadd("key2", "c", "d", "e")

assert redis.sunion("key1", "key2") == {"a", "b", "c", "d", "e"}
```

</RequestExample>