More properly, both the CPython 3.6 and PyPy compact dicts are based on this proposal: https://mail.python.org/pipermail/python-dev/2012-December/123028.html h

More properly, both the CPython 3.6 and PyPy compact dicts are based on this proposal: https://mail.python.org/pipermail/python-dev/2012-December/123028.html https://mail.python.org/pipermail/python-dev/2012-December/1... and this proof of concept: http://code.activestate.com/recipes/578375 http://code.activestate.com/recipes/578375