In the following output (see below), why would x[1,None] work, but
x[1,None,2] or even x[1,2,None] not work?
Incidentally, I would be very interested in a solution that allows me to
index numpy arrays using a list/iterable that might contain None values. Is
there a straightforward way to do so, or should I just use list
comprehensions (i.e. [x[a] for a in indices if a])?
Thanks!
Orest
In [122]: x = arange(5)
In [123]: x[1]
Out[123]: 1
In [124]: x[None]
Out[124]: array([[0, 1, 2, 3, 4]])
In [125]: x[1,None]
Out[125]: array([1])
In [126]: x[1,None,2]
---------------------------------------------------------------------------