def list_available_drivers():
return drivers.available_drivers()<EOL>
Returns a list of string with the names of available drivers.

    Available means that the driver is installed and can be used. For example,
    it will not contain "Raspberry" if you're not running on a Raspberry Pi,
    even if the raspberry.py script is present in the drivers directory.

    @returns a list of strings that can be fed to `ahio.new_driver` to get an
    instance of the desired driver.