Pergunta de entrevista da empresa Persistent Systems

1. how memory management is works in python. 2. What data structured you have used , what is dictionary and how it works behind the scenes. why key value pair ? 3. If you have 2 technology Node and Python, what you will choose and why ? 4. What is event loop in js/node js, how it works ? 5. what Idempotency in a REST API 6. If you will develope REST API in Django what things you will consider ?