id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	branch	branch_author	launchpad_bug
5829	Replace DictMixin in twisted.web.http_headers with MutableMapping	vperic		"In Python 3, DictMixin is no longer provided and should be replaced with MutableMapping (which is available in Python 2.6+). This involves, at least, defining a ``__len__`` method for the _DictHeaders class.

{{{
./twisted/web/http_headers.py:10:from UserDict import DictMixin
}}}"	enhancement	closed	normal	Python-3.x	core	duplicate