从列表中获取最大值

从列表中获取最大值

本文介绍了从列表中获取最大值?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

 所以我有一个包含几个列表的列表,其中首先有三个字符串,然后是一个浮点数, resultlist = [[1,1,a,8.3931,[1,2,b,6.3231],[2,1,c,9.1931] ] 

如何创建一个返回最大值的函数(这里是9.1931)?我试过了:

pre $ def MaxValue():
max_value = max(resultlist)
return max_value

但这只是给了我一个列表。



编辑:另外,我可以通过任何方式获得值来自哪里的索引?从哪个子列表开始?

解决方案

循环访问外部列表并选择每个子列表的最后一个元素:



pre $ def max_value(inputlist):
返回最大值([输入列表中子列表的子列表[-1]])

print max_value(resultlist)
#9.1931

如果您保留所有功能(将列表作为参数传递,不要通过重用变量名称来混淆名称空间)。

So I have a list that contains several list which all have three strings first, then one float number, like:

resultlist = [["1", "1", "a", 8.3931], ["1", "2", "b", 6.3231], ["2", "1", "c", 9.1931]]

How do I make a function that returns the maximum value (which here would be 9.1931)? I tried

def MaxValue():
    max_value = max(resultlist)
    return max_value

but that just gives me a list.

EDIT: Also, any way I could get the index for where the value comes from? Like, from which sublist?

解决方案

Loop through your outer list and select the last element of each sublist:

def max_value(inputlist):
    return max([sublist[-1] for sublist in inputlist])

print max_value(resultlist)
# 9.1931

It's also best if you keep all function related variables in-scope (pass the list as an argument and don't confuse the namespace by reusing variable names).

这篇关于从列表中获取最大值?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

07-28 05:16