Cyclomatic (or conditional) complexity is a metric used to indicate the complexity of a source code. Excessive complexity is something that is beyond recommended level of 10 (threshold that points to the fact the source code is too complex and refactoring is suggested). Here is a list of web frameworks examined: bottle, cherrypy, circuits, django, flask, pyramid, pysi, tornado, turbogears, web.py, web2py and wheezy.web.
You can read more here: http://mindref.blogspot.com/2012/11/python-web-excessive-complexity.html Thanks. Comments or suggestions are welcome. Andriy Kornatskyy -- http://mail.python.org/mailman/listinfo/python-list