Combining logic statements AND in numpy array

Question

What would be the way to select elements when two conditions are True in a matrix? In R, it is basically possible to combine vectors of booleans.

So wha

Answer 1

There's a function for that:

In [8]: np.logical_and(A < 3, A > 1)
Out[8]: array([ True,  True,  True,  True,  True], dtype=bool)

Since you can't override the and operator in Python it always tries to cast its arguments to bool. That's why the code you have gives an error.

Numpy has defined the __and__ function for arrays which overrides the & operator. That's what the other answer is using.