Context.flatten()
Using flatten() method you can get whole Context stack as one dictionary including builtin variables.
>>> c = Context()
>>> c['foo'] = 'first level'
>>> c.update({'bar': 'second level'})
{'bar': 'second level'}
>>> c.flatten()
{'True': True, 'None': None, 'foo': 'first level', 'False': False, 'bar': 'second level'}
A flatten() method is also internally used to make Context objects comparable.
>>> c1 = Context()
>>> c1['
