numpy array to the just number in the array
A numpy array of rank 0 is a scalar (it's got shape ())  and will behave like a scalar everyone. You can treat it like that.
You're perhaps mixing it up with an array of rank 1, e.g., np.array([99.79928571]).
You can also wrap your list into np.array to get an array of float64. Perhaps that looks nicer to your eye.
I got array list looks like  

[array(99.75142857), array(99.79928571), array(99.82238095),
  array(99.83857143), array(99.85), array(99.85738095),
  array(99.86285714), array(99.86767857)]

I'm not sure what is this array but I just want to ge a numbers 
[99.75142857,99.79928571....]
this array() means numpy array