Did you execute anything else between 66 and 93?
For me everything seems to be okay.
import numpy as np
x = np.random.rand(5, 8)
> x[1]
array([0.00980328, 0.03911296, 0.3676479 , 0.91376775, 0.87772554,
0.17248357, 0.53367425, 0.60549359])
> x[1][1]
0.03911295942744564
> x[1,1]
0.03911295942744564
