Can't compare to ruby as I haven't used it much but the python world is seriously overflowing with web-related frameworks and libraries.
Django is the most popular single framework, but at least as many people prefer to roll their own based on various modules. Some of the most popular backbone kits would be werkzeug, cherrypy, webpy, pylons. Then there's literally dozens of template languages (jinja, genshi, cheetah, to name a few) and at least three mature ORMs (sqlalchemy, storm, sqlobject) to choose from.
So, while I have no idea about ruby libraries I can assure you that in python-land you get to choose between at least two mature options for pretty much any web-related task.
Django is the most popular single framework, but at least as many people prefer to roll their own based on various modules. Some of the most popular backbone kits would be werkzeug, cherrypy, webpy, pylons. Then there's literally dozens of template languages (jinja, genshi, cheetah, to name a few) and at least three mature ORMs (sqlalchemy, storm, sqlobject) to choose from.
So, while I have no idea about ruby libraries I can assure you that in python-land you get to choose between at least two mature options for pretty much any web-related task.