[Tutor] Sorting Dictionary of Dictionary by certain Value

[Joe Python]

Hi Pythonistas,

I have a large dictionary of dictionary (50,000+ keys) which has a structure
as follows:
DoD = {
        'flintstones' : {
        'husband'   : "fred",
        'pal'       : "barney",
        'income'    :  500,
    },
    'jetsons' : {
        'husband'   : "george",
        'wife'      : "jane",
        'his boy' : "elroy",
        'income'    :  700,
    },
    'simpsons' : {
        'husband'   : "homer",
        'wife'      : "marge",
        'kid'       : "bart",
        'income'    :  600,
    },
};

I want to sort the dictionary by 'income'
Is there an efficient way to do the same.
Thanks in advance.

- Jo
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