python - Multiple conditions using 'or' in numpy array

Question

So I have these conditions:

A = 0 to 10 OR 40 to 60

B = 20 to 50

and I have this code:

area1 = N.where((A>0) & (A<10)),1,0)
area2 = N.where((B>20) & (B<50)),1,0)

My question is: how do I do 'OR' condition in numpy?

Answer 1

If numpy overloads & for boolean and you can safely assume that | is boolean or.

area1 = N.where(((A>0) & (A<10)) | ((A>40) & (A<60))),1,0)