Please post answer who is expert in Python!! so I wanna answers of Python OOP experts

PLEASE VERY DETAILED ANSWERS Define what a reference to an object means in the context of Python programming and explain what using a reference entails. You may wish to provide examples to make your point clearer, but make sure you describe the idea first. Which object-oriented programming concept is employed as a code reuse mechanism? Name this concept and describe it. Explain what a decorator is in the context of Python. Describe at least one advantageof using decorators Explain what the singleton pattern is. Explain if this pattern is necessary in the context of Python object-oriented programming and how it may be implemented in Python