Python Interview Questions and Answers

Q1. What is Python?

Ans: Python is a high-level, interpreted programming language known for readability.

Q2. What are Python's key features?

Ans: Simple syntax, dynamic typing, interpreted, object-oriented, and vast libraries.

Q3. What is a list in Python?

Ans: A list is an ordered, mutable collection of items.

Q4. What is a tuple?

Ans: A tuple is an ordered, immutable collection of items.

Q5. What is a dictionary?

Ans: A dictionary is a key-value pair collection used for fast lookups.

Q6. How do you write a function in Python?

Ans: Using the def keyword followed by function name and parameters.

Q7. What is indentation in Python?

Ans: Indentation indicates a block of code and is mandatory.

Q8. What is PEP8?

Ans: PEP8 is a style guide for writing readable Python code.

Q9. What are Python data types?

Ans: Common types include int, float, str, list, tuple, dict, and bool.

Q10. What is a loop in Python?

Ans: A loop allows executing a block of code multiple times (for/while).

Q11. What is a module?

Ans: A module is a file containing Python definitions and functions.

Q12. What is a package in Python?

Ans: A package is a directory containing multiple modules with __init__.py file.

Q13. What is typecasting?

Ans: Typecasting is converting one data type into another, e.g., int to float.

Q14. What are Python libraries?

Ans: Pre-written code modules like NumPy, Pandas, Matplotlib, etc.

Q15. What is the use of comments?

Ans: Comments are used to describe code logic, ignored during execution.