Question

I want to do the same thins in this post reverse dictionary order . I didn’t understand how to use OrderedDict. I tried this code with the dict() method used on the reversed list
but It gave me the initial dictionary.

mydic = {'n1': 3, 'n2': 9}
ol = mydic.items()
ol.reverse()
print(ol)
dc = dict(ol)
print(dc)

as a result I get :

ol >> [('n2', 9), ('n1', 3)]
dc >> {'n1': 3, 'n2': 9}

Is there a way to rebuilt the dictionary after reversing the order ?

Thanks in advance

Answer 1

Regular Python dictionaries don’t preserve any order, so rearranging the keys won’t do anything useful.

That being said, OrderedDict is really simple to use:

>>> from collections import OrderedDict
>>> 
>>> ol = [('n2', 9), ('n1', 3)]
>>> dc = OrderedDict(ol)
>>> dc
OrderedDict([('n2', 9), ('n1', 3)])