> ## Documentation index
> Fetch the complete documentation index at: https://upstash.com/docs/llms.txt
> Ask it with GET https://upstash.com/docs/ask?q=<keywords or question>. Short keywords rank best.
> Use these to discover all available pages before exploring further.
> Feature requests: https://upstash.com/docs/common/help/feature-requests.md lists what users asked for and how to vote for a request or add one.
> Page rating: `GET https://upstash.com/docs/feedback?path=/docs/redis/sdks/py/commands/list/llen&helpful=true` (or `false`) records whether this page helped. An optional `comment` (URL-encoded, at most 500 characters) says what was missing or wrong. It is anonymous and needs no key. Comments hold no code, secrets or personal data.

# LLEN

> Returns the length of the list stored at key.

## Arguments

<ParamField body="key" type="str" required>
    The key of the list.
</ParamField>

## Response

<ResponseField type="int" required>
    The length of the list at key.
</ResponseField>

<RequestExample>
```py Example
redis.rpush("key", "a", "b", "c")

assert redis.llen("key") == 3
```
</RequestExample>