python 2.7 - Given three nested dictionaries, sort the top two nested dictionaries from a value in the innermost dictionary? -


i trying sort both outermost dictionary , "middle" dictionary value of "cal" (highest first) in innermost dictionary. accomplish using ordereddict.

given example below, trying accomplish:

  • for foods, order food subtypes highest calorie content (i.e - pizza, pesto should appear first because has higher calories when compared cheese.
  • order foods highest calorie content (i.e - pizza should appear first has subtype more calories other food)

i have following data:

foods = {     "apple": {         "red": {             "cal": "1",              "taste": "4"         },          "green": {             "cal": "2",              "taste": "6"                }     },      "pizza": {         "pesto": {             "cal": "200",              "taste": "9"         },          "cheese": {             "cal": "100",              "taste": "11"          }            } }

this result looking for:

d = {     "pizza": {         "pesto": {             "cal": "200",              "taste": "9"         },          "cheese": {             "cal": "100",              "taste": "11"                }     },      "apple": {         "green": {             "cal": "2",              "taste": "6"         },          "red": {             "cal": "1",              "taste": "4"          }            } }

this should work:

from collections import ordereddict  od = ordereddict() food, dct in sorted(foods.items(),                         key=lambda x: max(int(y['cal']) y in x[1].values()),                         reverse=true):     od[food] = ordereddict()     subod = od[food]     subkey, subdct in sorted(dct.items(), key=lambda x: int(x[1]['cal']),                                  reverse=true):         subod[subkey] = subdct

with new input gives:

# pprint import pprint # pprint(od)  ordereddict([('cheesecake',               ordereddict([('extrasweet', {'cal': '18000', 'taste': '16'}),                            ('sweet', {'cal': '12000', 'taste': '17'})])),              ('icecream',               ordereddict([('chocolate', {'cal': '2000', 'taste': '9'}),                            ('vanilla', {'cal': '1000', 'taste': '11'})])),              ('pizza',               ordereddict([('pesto', {'cal': '200', 'taste': '9'}),                            ('cheese', {'cal': '100', 'taste': '11'})])),              ('apple',               ordereddict([('green', {'cal': '20', 'taste': '6'}),                            ('red', {'cal': '1', 'taste': '4'})]))])

(but please: next question take tour, read on how ask question , provide minimal, complete , verifiable example.)


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