Sort a nested dictionary in Python

Question

I have the following dictionary.

var = a = { 
  \'Black\': { \'grams\': 1906, \'price\': 2.05},
  \'Blue\': { \'grams\': 9526, \'price\': 22.88},
  \'Gold\':         


        

Answer 1

Construct an OrderedDict from a list of ordered item tuples:

from collections import OrderedDict

ordered = OrderedDict(sorted(a.items(), key=lambda i: i[1]['price']))

(.items() assumes Python 3, in Python 2 iteritems should do the same.)