After once again multiple (this time only three) years, I am happy to announce version 0.4.9 of ruamel.orderddict. Main enhancement since the original release in 2007 is the addition of the viewkeys/viewitems/viewvalues methods as added to the dictionaries in Python 2.7 The package can be installed from PyPI, and wheels are available for Windows. https://pypi.python.org/pypi/ruamel.ordereddict Sources are hosted on bitbucket. ---------------------

From the blurb on ruamel.ordereddict home-page:

This is an implementation of an ordered dictionary with Key Insertion Order (KIO: updates of values do not affect the position of the key), Key Value Insertion Order (KVIO, an existing key's position is removed and put at the back). Sorted dictionaries are also provided. Currently only with Key Sorted Order (KSO, no sorting function can be specified, but a transform function to be applied on the key before comparison can be supplied). It implementation is directly derived from dictobject.c and its speed is 5-10% slower than dict() and 5-9 times faster than Larosa/Foord excellent pure Python implemention. With a little helper wrapper (because of incompatibilities in the more recently implemented OrderedDict in the standard library), ruamel.ordereddict will also pass all unittests for OrderedDict.