Data Science, Artificial Intelligence, Machine Learning, Programming, Mathematics.
element from an index to another: start:end. For example: b[2:5] array([ 0.2829785 , -1.50629471, -0.57860025]) If you omit start or end, it will uses respectively the first element and the last element. For instance, [:] will return the three first elements. b[:3] array([-1.0856306 , 0.99734545,