python programming language

Questions 1. What is a class in Object-Oriented Programming? 2. Why do you think classes are being implemented in certain programs while some are sequential(line-by-line)? 3. How is it that there are variables of the same name such account_firstname and account_lastname that exist but have different values? 4. Explain the constructor functions role in initializing the attributes of the class? When does the Constructor function execute or when is the constructor function called? 5. Explain the benefits of using Constructors over initializing the variables one by one in the main program