Random snippet from OrderedDict discussion with @nathan_hoad

gistfile1.txt

>>> od
OrderedDict([('my first key', 'first val'), ('second', 'something'), ('third', 'blah')])
>>> od._OrderedDict__root[0]
[[[[[...], [...], None], [...], 'my first key'], [...], 'second'], [[...], [[...], [[...], [...], 'second'], 'my first key'], None], 'third']
>>> od._OrderedDict__root[1]
[[[[[...], [...], 'second'], [...], 'third'], [...], None], [[...], [[...], [[...], [...], None], 'third'], 'second'], 'my first key']
>>>
>>> from pprint import pprint as pp
>>> pp(od._OrderedDict__root)
[[[[<Recursion on list with id=24188808>,
    <Recursion on list with id=24182616>,
    'my first key'],
   <Recursion on list with id=23548992>,
   'second'],
  <Recursion on list with id=24188808>,
  'third'],
 [<Recursion on list with id=24188808>,
  [<Recursion on list with id=24189048>,
   [<Recursion on list with id=24182616>,
    <Recursion on list with id=24188808>,
    'third'],
   'second'],
  'my first key'],
 None]