Problem with api

Hi

I'm trying to write a script which lists our current linodes using the API.

I've configured the API Key on the account and have installed linode ruby gem.

I've written a script, substituting Key with the API key

class LinodeApi
require 'linode'
LINODE_API_KEY = Key
def initialize
  @l = Linode.new(api_key: LINODE_API_KEY)
end

def list
    @l.linode.list
end
end

but when I run the script by doing

ruby list.rb

it does nothing. What am I doing wrong?