Cmsplugin-banner is a project mainly written in Python, it's free.
the default settings are:
the (css) class choices CMSPLUGIN_BANNER_STYLE_CHOICES = ( ('default','default'), )
add "cmsplugin_banner.context_processors.plugin_ad_slots" to TEMPLATE_CONTEXT_PROCESSORS
Setup for Google Ads:
<script type="text/javascript" src="http://partner.googleadservices.com/gampad/google_service.js"></script><head> by including cmsplugin_banner/header_include.html. This assumes you also add
<script type="text/javascript">GA_googleFetchAds();</script> to head and have a context variable called AD_ACCOUNT_IDENTIFIER with the google ad account id.