Reverse string in python

This is how to reverse a string:

def reverse_string(s):
    """
    Reverse a given string using slicing.
    :param s: The input string
    :return: The reversed string
    """
    return s[::-1]  # Slicing: Start to end with a step of -1

$\frac{2}{4} = \sum_0^N N \int_a^b x^2 dx$