title: 2 different specified elements from 2 numpy arrays
body: <p>I have two numpy arrays with 0s and 1s in them. How can I find the indexes with 1 in the first array and 0 in the second?</p>
  <p>I tried np.logical_and</p>
  <p>But got error message (builtin_function_or_method' object is not subscriptable)</p>