本文介绍了如何减去列表中的元组?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
假设我有一个包含元组的列表.
Let's say I have a list with tuples in it.
类似这样的东西:
listnum = [(18,12),(12,20)]
有没有一种方法可以减去元组中的内容并将listnum变成:
Is there a way I can subtract what is in the tuples and make listnum into:
listnum = [6,8]
如您所见，它采用元组中最大的数字，然后将其相减.
As you can see It takes the biggest of the numbers in the tuple and subtracts it by the other.
推荐答案
使用列表理解:-
>>> listnum = [(18,12),(12,20)]
>>> [(i-j) for i,j in listnum]
[6, -8]
>>> listnum = [(18,12),(12,20),(32,54),(2,43)]
>>> [(i-j) for i,j in listnum]
[6, -8, -22, -41]
然后您要求输入bigger number - smaller；使用abs()进行计算.
And as you asked for bigger number - smaller; use abs() to calculate it.
>>> listnum = [(18,12),(12,20),(32,54),(2,43)]
>>> [abs(i-j) for i ,j in listnum]
[6, 8, 22, 41]
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