I am comparing these 3 very different frameworks on a few precise points. I already know Django has more users and that Pylons is more flexible. I am a bad programmer so I am looking for a framework which makes things easy for me.
First, I want users to be able to register with their e-mail adress : no stupid username ! Like on Facebook, they have to add their first and last names. I know this is not easy to do in the good old Django framework. I have tested the django-registration application. It does not allow this type of registration ! One has to create an AUTHENTICATION_BACKEND. That's too complicated for me... I wonder if there exists an easy solution in Pylons. I have seen it is easy to do in Web2Py.
Second, I want only invited people to be allowed to register. I want an e-mail invitation system. I know it exists in Django but the django-invitation application works on top of the django-registration application, and so it requires a username ! Is there an easy solution in Pylons or Web2Py ?
Third, in my kind of social network application, I want people to send messages to other people. So when they type somebody's name, it must appear as an existing name. A bit like the "tag system" on Stackoverflow. Is that easy to do in Django, Pylons or Web2py ?