Explain inheritance, polymorphism, constructors, destructors
Company: Amazon
Role: Software Engineer
Category: Software Engineering Fundamentals
Difficulty: easy
Interview Round: Technical Screen
## OOP fundamentals
Answer the following concept questions and provide a small example where requested:
1. **Inheritance vs. polymorphism**
- Explain what *inheritance* is and what *polymorphism* is.
- Give an example showing a child class **overriding** a parent class method.
2. **Constructor vs. destructor**
- Explain the purpose of constructors and destructors and when they are executed.
- Follow-up: **Does Python have a destructor?** If so, what is it, and what caveats exist?
Quick Answer: This question evaluates understanding of object-oriented programming concepts—specifically inheritance, polymorphism, constructors, and destructors—and competency in explaining class relationships, method overriding, and object lifecycle semantics.
