> ## 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/string/msetnx&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.

# MSETNX

> Set multiple keys in one go unless they exist already.

For billing purposes, this counts as a single command.

## Arguments 

<ParamField  type="Record<str, TValue>" required>
  An object where the keys are the keys to set, and the values are the values to set.
</ParamField>

## Response

<ResponseField  required>
`1` if all keys were set, `0` if at least one key was not set.
</ResponseField>

<RequestExample>
```py Example
redis.msetnx({
    key1: 1,
    key2: "hello",
    key3: { a: 1, b: "hello" },
})
```
</RequestExample>