python dictionary return key of max value code example

Example 1: python max key dictionary key getter

from operator import itemgetter

items = [
    {'a': 1, 'b': 99},
    {'a': 2, 'b': 88},
    {'a': 3, 'b': 77},
]

print(max(items, key=itemgetter('a')))
print(max(items, key=itemgetter('b')))

Example 2: get max n values in dict py

import heapq
from operator import itemgetter

n = 3

items = {'a': 7, 'b': 12, 'c': 9, 'd': 0, 'e': 24, 'f': 10, 'g': 24}

topitems = heapq.nlargest(n, items.items(), key=itemgetter(1))  # Use .iteritems() on Py2
topitemsasdict = dict(topitems)