How to calculate the absolute value for an array in python?

Question

How to calculate the absolute value for an array in python?

for example: a = [5,-2,-6,5]

I want to know the max of abs(a), and the answer should be 6. Thank you!

Answer 1

max(abs(i) for i in [5, -2, -6, 5])

Answer 2

Try this:

import numpy
max(numpy.absolute(a))

Answer 3

Try this

a = [5, -2, -6, 5]
print max(abs(x) for x in a)

The max function can accept an iterable, and abs(x) for x in a is a generator which will give the absolute value of each element in a .

Answer 4

或者你可以使用：

max(map(abs, [5,-2,-6,5]))

Answer 5

max(abs(i) for i in [5, -2, -6, 5])

列表综合解决方案:)