# EXISTS

> Check if a key exists.

## Arguments

<ParamField body="keys" type="*List[str]" required>
  One or more keys to check.
</ParamField>

## Response

<ResponseField type="int" required>
  The number of keys that exist
</ResponseField>

<RequestExample>
```py Example
redis.set("key1", "Hello")
redis.set("key2", "World")

assert redis.exists("key1", "key2") == 2

redis.delete("key1")

assert redis.exists("key1", "key2") == 1
```
</RequestExample>