[FIXED] Easy way to test if each element in an numpy array lies between two values?

Issue

I was wondering if there was a syntactically simple way of checking if each element in a numpy array lies between two numbers.

In other words, just as numpy.array([1,2,3,4,5]) < 5 will return array([True, True, True, True, False]), I was wondering if it was possible to do something akin to this:

1 < numpy.array([1,2,3,4,5]) < 5

... to obtain ...

array([False, True, True, True, False])

I understand that I can obtain this through logical chaining of boolean tests, but I'm working through some rather complex code and I was looking for a syntactically clean solution.

Any tips?

Solution

One solution would be:

import numpy as np
a = np.array([1, 2, 3, 4, 5])
(a > 1) & (a < 5)
# array([False,  True,  True,  True, False])

Answered By - mata