Are you preparing for your first Python developer interview? Whether you’re a student, a recent graduate, or transitioning into Python development, this guide will help you gain confidence by covering the most commonly asked Python interview questions for freshers.
In this blog post, we’ve broken down Python questions into key categories: basic, intermediate, coding, and conceptual—complete with examples, explanations, and tips.
Let’s dive in!
🔹 Why Python for Beginners?
Python has become the go-to programming language due to its simple syntax, massive community, and versatility in data science, web development, automation, and more. As a fresher, learning Python not only boosts your resume but also increases your chances of cracking technical interviews.
🔹 Section 1: Basic Python Interview Questions
1. What is Python?
Answer:
Python is a high-level, interpreted, general-purpose programming language known for its readability and simple syntax. It supports multiple paradigms like object-oriented, procedural, and functional programming.
2. List some key features of Python.
- Open-source
- Dynamically typed
- Interpreted language
- Cross-platform
- Large standard library
- Support for modules and packages
3. What are Python’s data types?
Python has the following built-in data types:
- Numeric (int, float, complex)
- Sequence (list, tuple, range)
- Text (str)
- Set (set, frozenset)
- Mapping (dict)
- Boolean (bool)
- Binary (bytes, bytearray, memoryview)
4. What is the difference between a list and a tuple?
| Feature | List | Tuple |
|---|---|---|
| Mutability | Mutable | Immutable |
| Syntax | [1, 2, 3] | (1, 2, 3) |
| Performance | Slower | Faster |
5. What is PEP 8?
Answer:
PEP 8 is the official style guide for writing readable Python code. It recommends naming conventions, code layout, indentation, and more.
🔹 Section 2: Python Syntax and Control Structures
6. Explain Python’s indentation.
Python uses indentation (typically 4 spaces) to define blocks of code. This replaces the use of curly braces {} found in other languages.
7. What is the difference between == and is?
==: Checks if values are equal.is: Checks if two variables point to the same object in memory.
x = [1, 2]
y = [1, 2]
print(x == y) # True
print(x is y) # False8. How does Python handle loops?
Python supports for and while loops.
for i in range(5):
print(i)
9. What is the use of break, continue, and pass?
break: Exit loopcontinue: Skip iterationpass: Placeholder with no action
🔹 Section 3: Functions and Scope
10. How do you define a function in Python?
def greet(name):
return "Hello, " + name
11. What is the difference between *args and **kwargs?
*args: Non-keyword variable length arguments**kwargs: Keyword variable length arguments
def example(*args, **kwargs):
print(args)
print(kwargs)
12. What is the scope of variables in Python?
Python follows the LEGB rule:
- Local
- Enclosing
- Global
- Built-in
🔹 Section 4: Object-Oriented Programming (OOP)
13. What is a class and object in Python?
A class is a blueprint, and an object is an instance of the class.
class Dog:
def __init__(self, name):
self.name = name
dog1 = Dog("Bruno")
14. Explain inheritance in Python.
Inheritance allows a class (child) to inherit properties from another class (parent).
class Animal:
def speak(self):
print("Animal speaks")
class Dog(Animal):
def bark(self):
print("Woof!")
15. What is method overriding?
When a subclass provides a specific implementation of a method that is already defined in its parent class.
🔹 Section 5: Python Coding Interview Questions
16. Write a program to check if a number is prime.
def is_prime(n):
if n <= 1:
return False
for i in range(2, int(n**0.5)+1):
if n % i == 0:
return False
return True
17. Write a Python program to reverse a string.
def reverse_string(s):
return s[::-1]
18. Write code to find the factorial of a number.
def factorial(n):
return 1 if n == 0 else n * factorial(n - 1)
19. How to find duplicates in a list?
def find_duplicates(lst):
return list(set([x for x in lst if lst.count(x) > 1]))
20. Fibonacci sequence using iteration.
def fibonacci(n):
a, b = 0, 1
for _ in range(n):
print(a, end=' ')
a, b = b, a + b
🔹 Section 6: Python Libraries and Tools
21. What is the use of Python’s math module?
Provides mathematical functions like sqrt(), ceil(), floor(), etc.
22. What is NumPy?
NumPy is a library for numerical operations in Python. It provides support for arrays, matrices, and mathematical functions.
23. What is pip?
Python’s package manager for installing libraries from the Python Package Index (PyPI).
pip install numpy
🔹 Section 7: Python File Handling
24. How do you read a file in Python?
with open('file.txt', 'r') as f:
content = f.read()
25. How do you write to a file in Python?
with open('file.txt', 'w') as f:
f.write("Hello World")
🔹 Section 8: Advanced Concepts (Basics Level)
26. What is a lambda function?
An anonymous function defined using the lambda keyword.
add = lambda x, y: x + y
27. What is list comprehension?
A concise way to create lists.
squares = [x**2 for x in range(10)]
28. What are Python decorators?
Functions that modify the behavior of other functions.
def decorator(func):
def wrapper():
print("Before function")
func()
print("After function")
return wrapper
🔹 Section 9: Common Mistakes by Freshers
- Forgetting to use
selfin class methods - Misunderstanding mutable vs immutable objects
- Using
isinstead of== - Ignoring error handling with
try-except
✅ Final Tips for Python Interview Success
- Practice coding daily on platforms like LeetCode or HackerRank.
- Read the documentation for built-in modules.
- Focus on clarity in your code and explain your logic.
- Revise object-oriented concepts and real-life applications.
- Mock interviews help build confidence.
Conclusion
Python interviews for freshers are focused on testing your basic understanding, problem-solving skills, and your ability to write clean code. If you’ve covered all the topics and practiced the questions mentioned above, you’re already ahead in the game!
Good luck with your Python interview!
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