How to iterate over float elements?

Question

Python

Hello! A question. You need to go through the elements of the points_array array, and the elements in this array are of type float. I want to go from first to last element. How to act, because as I understand it, this method (which is below) is only for int values?
for i in range(points_array[0], points_array[-1]):

Answer 1

for f in points_array:
for f in points_array[1:5]: