Top Python Interview Questions and Answers (2024)

Python is a high-level, object-oriented programming language. Python is one of the easiest languages to learn because of its simple syntax, and it helps new programmers to understand programming concepts easily. Python is the preferred language for Rapid Application Development because of its high-level built-in data structures like lists, dictionaries, and sets, combined with other features like dynamic typing and dynamic binding. 

In this article, we have listed some of the most commonly asked questions in Python job interviews. These Python interview questions and answers will help you understand the programming language better and prepare for the interviews whether you are an experienced or a fresher developer.

1. What is Python?

• Python is a High-level, interpreted, and object-oriented scripting language that can be used on servers to create web applications.

• Python works on all operating systems and can be used to handle big data and perform complex mathematics.

• Python is used for web development (server-side), mathematics, software development and system scripting.

• Readable code

• Providing rich libraries

2. What are the features of Python?

• Supports both procedural and Object-oriented programming

• Open Source Language

• Interpreted Language

• It can be integrated with Java, C, C++, COM, ActiveX and CORBA

• Easy to debug

• Automatic Memory Management

• Dynamically-typed

• Portable

• Suitable even for bigger projects

3. What are the benefits of using Python Language as a tool in the present scenario?

• Open source

• Simplicity

• Extensive Libraries and Frameworks

• Development speed

• Dynamic Typing

• Versatility

• Portability

• Strong Community Support

4. What are negative indexes in Python?

Negative indexes refer from end to start.

Example:

    testarray = [3,6,9,12,15]

    print(testarray[-1]) //Output: 15

    print(testarray[-3]) //Output: 9

5. What is the difference between a module and a package?

A module is a single file or multiple files with Python code, while a Package is a directory with multiple modules.

6. Is Python case-sensitive?

Python is a case-sensitive language.

Examples:

1.     var, Var, VaR will considered as 3 variables in Python

2.     if is a keyword, but If iF are not

7. How is exceptional handling done in Python?

In Python, try, catch and Finally are the three keywords to handle errors in Python. The try block contains a test block of code for errors. If an error occurs, the except block handles the error. The final block has the unique feature of executing code after the try block, regardless of the result of the try-catch.

8. How do you remove the last element from a list?

Using the pop() method in Python, You can delete the last element in a list

    list = ["Red", "Blue", "Green","Silver", "Yellow", "Gray"]
    list.pop()
    print(list)

Output:

    ['Red', 'Blue', 'Green', 'Silver', 'Yellow']

9. How do you add a key value to a dictionary in Python?

To add key value to a dictionary, use the code like this

    user_dictionary = {
      "name": "Ashok",
      "Email": "ashok@gmail.com",
      "location": "Kochi"
    }

    user_dictionary['company'] = 'Test Company'

    print(user_dictionary)

10. How do you clear all the keys and values from a dictionary?

To clear all the keys and values from a dictionary, Use the following code

        user_dictionary.clear()

, where user_dictionary is the name of the dictionary

11. How do you append the Elements of Tuple to a List Using Python?

Using the extend() method in Python, You can append elements of tuples into list
 

Python Interview Questions and Answers: FAQ

1. What is Python? How does it differ from other programming languages?
2. What are the key features of Python? (e.g., indentation, dynamic typing, etc.)
3. How do you handle errors in Python?
4. What is the difference between list and tuple in Python?
5. Can you explain the concept of "duck typing" in Python?
6. How do you define a function in Python?
7. What is the difference between def and lambda in Python?
8. How do you handle exceptions in Python?
9. What is the difference between == and is operators in Python?
10. Can you write a simple program to solve a basic problem (e.g., printing "Hello, World!" to the console)?
11. Can you implement a simple sorting algorithm (e.g., bubble sort, quicksort)?
12. How do you implement a stack or queue using Python?
13. Can you write a program to find the intersection of two lists?
14. How do you determine if a string is a palindrome?
15. Can you implement a binary search algorithm?
16. Have you worked with web frameworks such as Django or Flask? If so, can you explain how they work?
17. Can you explain the concept of routing in web development?
18. How do you handle HTTP requests and responses in Python?
19. Can you use JSON data structures in your web development projects?
20. Have you worked with databases such as MySQL or MongoDB? If so, can you explain how they integrate with your web applications?
21. Have you worked with asynchronous programming using asyncio or Twisted?
22. Can you explain the concept of decorators in Python?
23. How do you use generators and coroutines in your code?
24. Can you explain the concept of memoization in Python?
25. Have you worked with machine learning or data science libraries such as scikit-learn or TensorFlow?
26. Can you describe your experience with Agile development methodologies?
27. How do you handle errors in your code? Can you give an example?
28. What is the difference between a compiler and an interpreter?