如何从Python中字典的最高值中随机地打破平局?

你可以建立一个反向字典:

import random

d =  {'banana': 3, 'apple': 2, 'cherry': 1, 'orange': 3}

d_inv = dict.fromkeys(d.values())
for dkey, dval in d.items(): 
    d_inv.setdefault(dval, list())
    d_inv[dval].append(dkey)

m = max(d.values())
print(random.choice(d_inv[m]))

你可以用 list comprehension , max random 功能:

import random
data = {'banana': 3, 'apple': 2, 'cherry': 1, 'orange': 3}
result = [i for i, v in data.items() if v == max(data.values())]
print (random.choice(result))

# With simple for loop and if condition
result_1 = []
for i, v in data.items():
    if v == max(data.values()):
        result_1.append(i)
print (random.choice(result_1))

你可以用 groupby choice :

from itertools import groupby
import random

d = {'banana': 3, 'apple': 12, 'cherry': 1, 'orange': 12}

print(random.choice(max(((k, list(g)) for k, g in groupby(sorted(d, key=d.get), key=d.get)), key=lambda x: x[0])[1]))

首先得到 max

import random
maxValue = max(result.values())

然后把所有的钥匙 list 使用 List Comprehensions

keys = [key for key, value in result.items() if value == maxValue]

keys

choice = random.choice(keys)