> ## 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/hash/hmset&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.

# HMSET

> Write multiple fields to a hash.

## Arguments

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

<ParamField body="fields" type="Dict[str, Any]" required>
  A dictionary of fields and their values.
</ParamField>

## Response

<ResponseField type="int" required>
  The number of fields that were added.
</ResponseField>

<RequestExample>
```py Example
# Set multiple fields
assert redis.hset("myhash"{
  "field1": "Hello",
  "field2": "World"
}) == 2
```
</RequestExample>