> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lilbots.io/llms.txt
> Use this file to discover all available pages before exploring further.

# The Python Runtime

> Build bots in Python

You can create bots in Python using the lil'bots Python runtime. When creating a new bot, select the Python runtime in the multiple selectio menu to create a Python Bot.

## The script.py file & the main function

The entrypoint to your bot is the `script.py` file, as specified under the "main" property in the `botspec.json` file. When your bot is executed it will look for an exported `main` function in that file and call it.

The `main` function can be asyncrounous (to let you use await inside) and recieves the three following arguments:

* **`inputs`** (object) - the inputs passed to your bot by the user.
* **`params`** (object) - the parameters configured by the the user for your bot.
* **`accounts`** (array) - an array containing all the requested account credentials for your bot to use.

A basic `main` function will look like this:

```python theme={null}
def main(inputs, params, accounts):
    # Your code here...
    return {
        "message": "Hello World!"
    }
```

## Installing dependencies and packages

You may use external packages in your bot. To do so, simply import any package you need in your `script.py` file. When your bot is executed, the runtime will automatically install all the packages you imported using `pip` and make them available to your bot.

Lil'bots uses [pipreqs](https://pypi.org/project/pipreqs/) to automatically detect the packages you use and install them.