Python interview Question with answer 2024

Python interview Question with answer 2024

What is Python? List some popular applications of Python in the world of technology.

• Definition: Python is a widely used, high-level programming language developed by Guido van Rossum. It emphasizes code readability and is versatile for various applications.
• Applications: Python is used in Data Science, Machine Learning, Deep Learning, Artificial Intelligence, Scientific Computing, Scripting, Networking, Game Development, Web Development, Web Scraping, and more.

2. What are the benefits of using Python language as a tool in the present scenario?

• Object-Oriented
• High-Level Language
• Dynamically Typed
• Extensive Support Libraries
• Open Source and Community Development
• Portable and Interactive
• Portable Across Operating Systems

3. Is Python a compiled language or an interpreted language?

• Python is both compiled and interpreted. It first compiles to bytecode, which is then interpreted by the Python Virtual Machine (PVM).

4. What does the ‘#’ symbol do in Python?

• The # symbol is used for comments in Python. Everything after # on a line is considered a comment and is ignored by the interpreter.

5. What is the difference between a Mutable datatype and an Immutable data type?

• Mutable data types can be modified after creation (e.g., List, Dictionary).
• Immutable data types cannot be modified after creation (e.g., String, Tuple).

6. How are arguments passed by value or by reference in Python?

• In Python, arguments are passed by object reference. Changes made to mutable objects are reflected outside the function, while immutable objects remain unchanged.

7. What is the difference between a Set and Dictionary?

• Set: Unordered collection with unique elements.
• Dictionary: Ordered collection of key-value pairs.

12. How is Exceptional handling done in Python?

• Exception handling is done using try, except, and finally blocks. try contains the code that might raise an exception, except catches and handles exceptions, and finally always executes.

13. What is the swapcase function in Python?

• swapcase() is a string method that converts uppercase characters to lowercase and vice versa.

14. Difference between for loop and while loop in Python

• for loop: Iterates through elements in collections.
• while loop: Continues until a specified condition is false.

15. Can we Pass a function as an argument in Python?

• Yes, functions can be passed as arguments to other functions, making Python a higher-order function supporting language.

**16. What are args and kwargs?

• *args: Represents variable positional arguments.
• **kwargs: Represents variable keyword arguments.

17. Is Indentation Required in Python?

• Yes, indentation is crucial in Python. It defines code blocks and is used instead of braces.

18. What is Scope in Python?

• Scope refers to where a variable can be accessed. Local, Global, Module-level, and Outermost scopes exist.

19. What is docstring in Python?

• Docstrings are documentation strings used to associate documentation with Python modules, functions, classes, and methods.

20. What is a dynamically typed language?

• Python is dynamically typed. Variable types are interpreted at runtime, and no explicit type declaration is required.

21. What is break, continue, and pass in Python?

• break: Terminates a loop.
• continue: Skips the rest of the loop and continues with the next iteration.
• pass: Acts as a placeholder, performing no operation.

22. What are Built-in data types in Python?

• Numeric, Sequence (String, List, Tuple, Range), Mapping (Dictionary), Set.

23. How do you floor a number in Python?

• The floor() method in the math module is used to get the largest integer less than or equal to a given number.