Top 50 Python Interview Questions and Answers in 2023

Python is one of the most popular programming languages used today, and it is widely used in various fields such as data science, machine learning, web development, and more. If you are preparing for a job interview as a Python developer, you may be wondering what types of questions you can expect.

Here are the top 50 Python interview questions and answers to help you prepare.

1. What is Python, and what are its advantages?
2. What is PEP 8, and why is it important?
3. What is the difference between list and tuple in Python?
4. What is a dictionary in Python?
5. What is the difference between == and is in Python?
6. What are decorators in Python?
7. What is the difference between instance, class, and static methods in Python?
8. What is the difference between append() and extend() methods in Python?
9. How do you handle exceptions in Python?
10. What is the difference between a shallow and deep copy in Python?
11. What is the difference between an iterator and a generator in Python?
12. What is the difference between a tuple and a named tuple in Python?
13. What is the difference between a module and a package in Python?
14. What is the difference between range() and xrange() in Python 2?
15. What is the difference between the 'read()' and 'readline()' methods in Python?
16. What is a lambda function in Python?
17. What is a closure in Python?
18. What is the difference between a list comprehension and a generator expression in Python?
19. What is a metaclass in Python?
20. What is the difference between 'is' and '==' operators?
21. What is the difference between 'continue' and 'break' in Python?
22. How do you sort a dictionary by value in Python?
23. What is the use of 'init' method in Python?
24. What is the use of 'str' method in Python?
25. What is the difference between mutable and immutable objects in Python?
26. What is a thread in Python?
27. What is a GIL in Python?
28. What is the difference between 'join()' and 'merge()' methods in Python?
29. What is the difference between a deep copy and a shallow copy in Python?
30. How do you implement inheritance in Python?
31. What is the difference between class and instance variables in Python?
32. What is a namespace in Python?
33. How do you create a new thread in Python?
34. What is the difference between 'import' and 'from...import' in Python?
35. What is a virtual environment in Python?
36. What is the difference between 'yield' and 'return' in Python?
37. What is a pickle in Python?
38. What is the use of the 'map()' function in Python?
39. What is the use of the 'filter()' function in Python?
40. What is a list comprehension in Python?
41. What is a generator expression in Python?
42. What is the use of the 'reduce()' function in Python?
43. What is the difference between a list and a set in Python?
44. What is the difference between an abstract class and an interface in Python?
45. What is a package in Python?
46. What is the difference between 'public', 'private', and 'protected' in Python?
47. What is a module in Python?
48. What is the difference between 'try' and 'except' in Python?
49. What is the difference between 'pop()' and 'remove()' in Python?
50. What is a hash table in Python?

Important 20 interview python questions answer

1. What is Python? Python is a high-level, interpreted, object-oriented programming language. It was created by Guido van Rossum and released in 1991.
2. What are the benefits of using Python? Some of the benefits of using Python are its easy-to-read syntax, large community support, versatility, and availability of numerous libraries and frameworks for different applications.
3. What is the difference between Python 2 and Python 3? Python 2 and Python 3 are different versions of the Python programming language. Python 2 is no longer supported and has been replaced by Python 3. Python 3 has some syntax changes, better Unicode support, and other improvements over Python 2.
4. What is PEP 8? PEP 8 is a set of guidelines for writing Python code. It covers topics such as code layout, naming conventions, comments, and other best practices.
5. What are the basic data types in Python? The basic data types in Python are integers, floating-point numbers, strings, and booleans.
6. What are the collections in Python? The collections in Python include lists, tuples, sets, and dictionaries.
7. What is a tuple? A tuple is an immutable collection of ordered elements. It is created using parentheses and separated by commas.
8. What is a list? A list is a mutable collection of ordered elements. It is created using square brackets and separated by commas.
9. What is a dictionary? A dictionary is a collection of key-value pairs. It is created using curly braces and separated by commas.
10. What is a set? A set is an unordered collection of unique elements. It is created using curly braces and separated by commas.
11. What is the difference between a list and a tuple? The main difference between a list and a tuple is that a list is mutable while a tuple is immutable.
12. What is the difference between a list and a set? The main difference between a list and a set is that a list is ordered while a set is unordered.
13. What is a generator in Python? A generator is a function that returns an iterator. It is used to generate a sequence of values on the fly.
14. What is a decorator in Python? A decorator is a function that takes another function as an argument and extends the behavior of the latter function without explicitly modifying its code.
15. What is a lambda function in Python? A lambda function is a small, anonymous function that can take any number of arguments but can only have one expression.
16. What is the difference between 'is' an '=='? 'is' tests for object identity while '==' tests for object equality.
17. What is the use of 'init' in Python classes? 'init' is a special method in Python classes that is called when an instance of the class is created. It is used to initialize the attributes of the instance.
18. What is a module in Python? A module is a file containing Python code that can be imported and used in other Python codes.
19. What is a package in Python? A package is a collection of modules that are organized in a directory hierarchy.
20. What is a virtual environment in Python? A virtual environment

SQL-Top interview questions