1. What is a valid variable name in Python?

2. Which of the following data types is immutable in Python?

3. What is the extension of Python files?

4. What function is used to display output in Python?

5. Which symbol is used for comments in Python?

6. Who created Python?

7. Which of the following is a string?

8. What type of language is Python?

9. Which operator is used for addition in Python?

10. What is the output of bool(0)?