如何计算python中数组的绝对值？
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How to calculate the absolute value for an array in python?
提问by wesley
How to calculate the absolute value for an array in python?
如何计算python中数组的绝对值？
for example: a = [5,-2,-6,5]
例如：a = [5,-2,-6,5]
I want to know the max of abs(a), and the answer should be 6. Thank you!
我想知道abs(a)的最大值，答案应该是6，谢谢！
采纳答案by Anorov
max(abs(i) for i in [5, -2, -6, 5])
max(abs(i) for i in [5, -2, -6, 5])
回答by SethMMorton
Try this
尝试这个
a = [5, -2, -6, 5]
print max(abs(x) for x in a)
The maxfunction can accept an iterable, and abs(x) for x in ais a generator which will give the absolute value of each element in a.
该max函数可以接受一个可迭代对象，并且abs(x) for x in a是一个生成器，它将给出 中每个元素的绝对值a。
回答by Phil Hunt
Alternately you could use:
或者，您可以使用：
max(map(abs, [5,-2,-6,5]))
回答by Kiattisak Anoochitarom
max(abs(i) for i in [5, -2, -6, 5])
The List Comprehensive Solution :)
列表综合解决方案:)
回答by Wuzhou Zhang
Try this:
尝试这个：
import numpy
max(numpy.absolute(a))
