Top Python Interview Questions and Answers (2025 Edition)

Core Python Interview Questions

1. First, what is Python?

Python is an interpreted, high-level language used for scripting, data research, automation, and web development.

2. Why is Python preferred among developers?

Python provides extensive libraries, rapid development, understandable syntax, and robust community support.

3. What are the fundamental data types in Python?

Int, float, str, bool, list, tuple, set, and dict are the main data types.

4. What makes a tuple different from a list?

A tuple cannot be changed, whereas a list may. Tuples use parentheses (), and lists use square brackets [].

5. How is memory handled in Python?

Python uses garbage collection and reference counting to manage memory.

Python Control Structures

6. In Python, what are conditional statements?

Python employs if, elif, and else to make condition-based decisions.

7. How do Python loops operate?

To iterate across sequences, use for loops. To repeat actions while a condition is true, use while loops.

8. What does "break and continue" mean?

break breaks out of a loop. Continue passes on to the next iteration, bypassing the current one.

Functions and Arguments

9. How do you define a function in Python?

Use the def keyword followed by the function name and parentheses.

python

def greet():
    print("Hello!")

10. What is the difference between `*args` and `**kwargs`?

*args collects positional arguments. **kwargs collects keyword arguments.

11. Can Python functions return multiple values?

Yes. You can return multiple values using a tuple.

python

def values():
    return 1, 2, 3

12. In Python, what is a module?

A Python code-containing file is called a module. It is reusable and importable into other scripts.

13. Describe what a package is.

A group of modules arranged in directories is called a package. There must be a __init__.py file included.

14. How do you import a module?

Use the import statement. For example: import math

Python OOP Interview Questions

15. Object-oriented programming: what is it?

The object-oriented programming (OOP) paradigm models real-world things using classes.

16. How do you define a class?

Use the class keyword. A class contains methods and attributes.

python

class Person:
    def __init__(self, name):
        self.name = name

17. How does a class define self?

The term "self" describes the class's current object. Variables and methods are accessed via it.

18. Inheritance: What is it?

A class can utilize the methods and attributes of another class through inheritance.

19. How does method overriding work?

A method inherited from the parent class can be redefined by a child class via method overriding.

20. Python decorators: what are they?

Decorators are functions that alter how another function behaves. When using them, the @ sign is utilized.

21. What is a generator?

Using the yield keyword, a generator generates values one at a time. Performance is enhanced and memory is preserved.

22. What are comprehensions?

Comprehensions provide a concise way to create sequences. List comprehension example:

python

squares = [x*x for x in range(5)]

23. What is a lambda function?

A lambda is a small anonymous function defined using the lambda keyword.

python

add = lambda x, y: x + y

Top Python Interview Questions and Answers (2025 Edition)