如何找到数组中元素的绝对值

Question

I have an array containing some negative values. how can i find the absolute value?

例如，假设我的阵列是

arr = [-2,-5,0,1,2]

我想要一个阵列

arr_out =[2,5,0,1,2]

Answer 1

没有使用列表理解的numpy：

arr = [-2,-5,0,1,2]
arr_out = [abs(i) for i in arr]
print(arr_out)

输出：

[2,5,0,1,2]

Answer 2

import numpy as np
arr = [-2,-5,0,1,2] 
print("Absolute value: ", np.absolute(arr))