Python的max以及min

python3.7 文档： https://docs.python.org/3/library/functions.html#max https://docs.python.org/3/library/functions.html#min https://blog.csdn.net/weixin_41084236/article/details/81875451

估计从最开始学python开始,没人没接触过max以及min这两个python的内建函数.
但这两个朴素的函数,其实也有一个相当好用的方法.
sorted()方法里可以定义key来实现自定义规则的排序.
而max和min里,也一样可以通过定义key来获取自定义规则的最值.

a = [2,2,2,2,3,1,"apple"]
print(max(a,key = a.count))
print(max(a,key = lambda x: x == "apple"))

print(min(a,key = a.count))
print(min(a,key = lambda x: x == "apple"))

 
====================== RESTART: F:\PyWorkspace\demo.py ======================
2
apple
3
2
>>>

在效果上,min与max的key与sorted的key相似,具体可以在上面链接的文章里查看.