When all true, then true in numpy-CodePudding

I have 2 arrays:

arr1 = np.linspace(1, 10, 10)
arr2 = np.linspace(50, 100, 10)

Then I want to do:

arr1 * arr2 == arr2 * arr1

But I want to get a single True as output and not an array of Trues.

How can I do it?

CodePudding user response：

You can check if two arrays are equal in all elements using np.array_equal:

np.array_equal(arr1 * arr2, arr2 * arr1)

In this particular case, you can reduce an array of bools to a single value using np.all:

(arr1 * arr2 == arr2 * arr1).all()

np.all(arr1 * arr2 == arr2 * arr1)