Welcome! In today's lesson, we will explore the practical application of string operations and type conversions in Python. These concepts are crucial and are deployed in many programming spheres. We'll examine a real-world example: time parsing. Have you ever pondered how to add a certain number of seconds to some specific time? By the end of today's session, you'll be equipped to calculate this using Python. Let's get started!

Imagine this: You receive a time formatted as a string in HH:MM:SS where HH, MM, and SS denote the hour, minute, and second, respectively. You are also given an integer representing a number of seconds. Your task is to calculate the new time after adding the provided seconds and output the result in the HH:MM:SS format.

For example, if the input time is 05:10:30 and the number of seconds to add is 123, the output should be 05:12:33 since 123 seconds translate to 2 minutes and 3 seconds.