> ## Documentation Index
> Fetch the complete documentation index at: https://launchdarkly-preview.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Set up Python SDK

> Install and initialize the LaunchDarkly Python SDK

> For the complete documentation index, see [llms.txt](/llms.txt). For the full documentation snapshot, see [llms-full.txt](/llms-full.txt).

<div>
  <ReadmeButton sdk={SDK.Python} />

  <CursorButton sdk={SDK.Python} />
</div>

### Install the package

```shell title={"pip"} theme={null}
pip3 install launchdarkly-server-sdk

```

### Initialize the SDK

```python title={"Python SDK initialization"} theme={null}
import os
import ldclient
from ldclient import Context
from ldclient.config import Config

if __name__ == '__main__':
    # Set your LaunchDarkly SDK key.
    # This is inlined as example only for onboarding.
    # Never hardcode your SDK key in production.
    ldclient.set_config(Config('YOUR_SDK_KEY'))

    if not ldclient.get().is_initialized():
        print('SDK failed to initialize')
        exit()

    # For onboarding purposes only we flush events as soon as
    # possible so we quickly detect your connection.
    # You don't have to do this in practice because events are automatically flushed.
    ldclient.get().flush()
    print('SDK successfully initialized')

```

<Accordion title="Finding your SDK credentials">
  You can find your server-side SDK key, client-side ID, and mobile key in the "Resources" section of the help menu. Click the **help icon** at the bottom left corner of the LaunchDarkly UI, then choose **SDK keys**:

  <Frame caption="The SDK keys option in the help menu.">
    ![The SDK keys option in the help menu.](https://files.buildwithfern.com/https://launchdarkly.docs.buildwithfern.com/docs/28d3e1c568378ea02528db7ba62bfbd742f6f1cad964b5675395e10af5eeeb60/assets/images/auto/help-menu-sdk-keys.auto.png)
  </Frame>
</Accordion>

To learn more, read [Initialize the client](/sdk/server-side/python#initialize-the-client) in the Python SDK reference guide.