Python中獲取字典中最值對應的鍵

1. 利用min(dict, key=dict.get)

>>> d = {1:1, 2:0, 3:2}
{1: 1, 2: 0, 3: 2}
>>> min(d, key=d.get)
2

2. 利用lambda函數

>>> min(d.items(), key=lambda x: x[1]) 
(2, 0)
>>> min(d, key=lambda x: d[x])
2