Python Interview Questions and Answers

Well, interview is the time when we are the most anxious. We want to answer all the Python questions in a prepared manner. We understand your anxiety and are here to give you a list of the interview questions that the interviewer may ask. Get assistance from this comprehensive list and crack your interviews like an expert.

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1. What is the difference between list and tuple?

Both the list and tuple is the combination of numbers and strings




List are mutable in nature where as tuples are immutable in nature.

2. What are the key features of python?

Interpreted programming language-no compilation like c,c++

Dynamically typed-no need to state the type of the variable

Functions are first class objects, classes also first class objects.

Writing python code is quick.

3. Why python is referred as glue code?

It helps in integrating multiple programming languages.

It is used in multiple spheres as web application,automation,scientific modelling,big data

4. How memory is managed in python?

It is managed by python’s private heap space.

Allocation of heap space is done by pythons memory manager.

5. Explain whats flask?

It is pythons micro webframework based on “Werkzeug ,jinja2, and good intentions”.

Benefits of flask:

User can modify the data stored by cookies session,if only it has the secret Flask key.

6. What is monkey Patching in python?

Dynamic modification of python class or modules during runtime.

It is kind of testing module in python

7. What is PEP 8?

It is a coding convention, a set of recommendation ,about how to write python code more readable

8. What is pickling and unpickling?

Pickle module accepts any python object and converts it into a string representation and dumps it into a file by using ,this process is called pickling.

While the process of retrieving original python objects from the stored string representation is called unpickling.

9. What are the tools that help to find bugs or perform analysis?

Pychecker is a static analysis tool that detects the bugs in python source code and warns about the style and complexity of the bug.

Pylint is another tool that verifies whether the module meets the coding standard.

10. What are python decorators?

It is a specific change that we make in python syntax to alter their functions easily.

11. What are built in types in python?

Mutable datatypes:




Immutable datatypes:




12. What is docstring in python?

Python documentation string is known as docstring ,it is a way of documenting python functions,modules and classes.

13. What is module and package in python?

Module is the way to structure the program.each python program file is a module which imports other modules.

A python folder which contains multiple python files is called Packages.

14. Is there a switch or case statements in python?if not what is the reason for the same?

Python does not switch statement but we can write switch function and use it.

15. What is a function in python programming?

A function is an object which represents a block of code and is a reusable brings modularity to a program and a higher degree of code reusability.

16. Which package is the fastest form of python?

PyPy provides the maximum compatibility which utilizing CPython implementation for improving its performance.

The tests confirmed that PyPy is nearly five times faster than the Cpython.

17. What is GiL in python programming language?

Python supports GIL (Global interpreter Lock)which is mutex used to secure access to python objects ,synchronizing multiple threads from running the python bytecodes at the same time.

18. What is composition in python?

It is a particular type of inheritance in python.

It means to inherit from the base class but from the relationship with the use of instance variables which are references to different objects.

19. What are closures in python?

Python closures are function objects returned by another function.

We use them to eliminate code redundancy.

20. How do you check the presence of the key in python dictionary?

21. What is the difference between Python and Django?

Python is a programming language, while Django is a web development framework. … Django is a web framework encoded in Python. So the difference is equal to the difference between a particular programming language and the software that is built in using it

22. What does Django mean in Python?

Django is a free, open source Web application framework written in Python. A framework is nothing more than a collection of modules that facilitate development. … The official website describes Django project as “a Python web framework that encourages high level rapid development and a clean and pragmatic design

23. How is Python used in web development

Python is widely used for web-scale application development which are not possible to compile and develop using other languages like .NET and PHP and Python is very powerful to support many features that easily ultra running with different structures such as Django, Flask, web2py and many more

24. Which is better Python or ruby

Its performance is similar, as Python and ruby scripting languages are high-level object-oriented. a tool for the development that Django-Python

25. is Python similar to ruby?

web framework ruby on Rails is built using the programming language r uby, mien after the Django web framework is created using the Python programming language. That’s where a big part of the difference is. The two languages are visually similar, but they are different worlds in their approaches to solving problems.

26. Is it easier than Django bottle?

Flask is more Pythonic than Django because the Bottle Web application code in most cases is more explicit than the Django web application code. So it’s easy for Python coders to answer. … Django is a great framework that includes everything, whether you need it or not

27. Is Python an easy-to-learn language

Although Python may be easier to use than Java, because it has a more intuitive coding style, both languages have their unique to developers and the benefits of end users. However, if you are starting your way to a programming career, you can start by learning Python as it is less complex.

28. What is the best flask or Django

Django and Flask are the two widely used frameworks for Python. However, they differ a lot, so the question of whether Django or Flask is better is one of the most discussed. Let’s make an analogy to the features and functionality of Flask vs Django, and let’s consider the best use cases for each of these frames

29. Can I create a website with Python?

Python can be used to create server-side Web applications. While a web framework is not required to build Web applications, developers rarely use existing open source libraries to accelerate progress in implementing the application. Python is not used in a Web browser

30. Is Python a good choice for web development

It’s a developer’s favorite for many reasons, especially for its readability and efficiency. When compared to other languages like PHP, Java or C ++, we can say that Python Web development is easier to learn, which makes it a better option for beginners. However, that does not mean it will not work as well

31. Can we develop a site using python

If you are looking to build a website using Python, you can do it by coding a program. With Python, you can not only run your code on a web server, but also accept page requests and provide responses in the form of HTML data. However, this requires a lot of sweat from you

32. What is the best web framework for Python?

Some commonly used Python frameworks are: Bottle. Bottle, developed by Marcel Hellkemp, is a microframework. … CherryPy. CherryPy is an open-source, object-oriented Python framework. … Bottle. Flask, developed by Armin Ronacher, is a powerful framework for Python Web applications. … Sanic. … Tornado

33. What is the difference between Python and PHP?

PHP is a language that is made for the web. You can make GTK and CLI applications with PHP, but it is mainly used for websites. Python is used for many things such as websites, web servers, game frameworks, desktop applications and CLI, IDE, and more. There is also a big difference in syntax

34. What is the best Django or PHP?

While Django can be compared to CakePHP, Ruby on Rails. However, Python along with Django is much faster than PHP, Python can be very powerful, it is generally used for large and complex applications (there are many exceptions), but Python is not as easy to implement and maintain as or PHP

35. Is Django written in Python?

Django is an open source web application framework written in Python. … Created by experienced developers, it takes care of much of the hassle of web development, so you can focus on writing your application without having to reinvent the wheel

36. Can we develop a web application using Python

Python can be used to create server-side Web applications. While a web framework is not required to build Web applications, developers rarely use existing open source libraries to accelerate progress in implementing the application. Python is not used in a Web browser

37. Can I use Python instead of PHP?

In other words, PHP comes with built-in batteries, but Python can adapt to your heart’s content. For example, PHP has web development at the core of its functionality: in fact, it is integrated into a web server. To use Python for web development, you need to work with a framework, such as Django

38. Is Python good for backend?

Although Python is a programming language, Node.js is an environment that allows JavaScript code to be run on the server side and not in a browser. … Without Node.js, the frontend and the backend used different languages, which could cause certain compatibility issues

39. Which is better PHP or Python?

Python only provides this mainly with Django, Pyramid, Pylons and Flask. However, Django is generally considered the de facto web design option in Python. Its counterparts in PHP are Kohana, Symfony, CodeIgniter and Zend. … The learning curve, at the moment, is more related to the pictures than to the languages

40. How do I run Apache in Python?

Configuring Apache web server to run Python on Windows Install Python. You can get Python from the following: … Configure Apache to run Python CGI. The next step is to use EditRocket to open the apache httpd.conf configuration file located in the apache installation directory in the conf directory. … Restart Apache. …

41. How to run a Python CGI script in Wamp?

Configuring Apache web server to run Python Python WindowsInstall. You can get Python from the following: … Configure Apache to run Python CGI. The next step is to use EditRocket to open the apache httpd.conf configuration file located in the apache installation directory in the conf directory. … Restart Apache. … Run a Python test page.

42. What is a CGI script in Python

CGI programming in Python. Common Gateway Interface (CGI) is a standard for writing programs that can interact through a web server with a client running a web browser

43. Can we use Python in HTML

Not only have you written a Python program that can write simple HTML, but now you’ve managed your Firefox browser using Python. In the next lesson, we’ll look at how to generate the data we collect as an HTML file

44. Can Python replace Java?

Many programmers have proved that Java is faster than Python. … They have to replace Python’s default runtime with CPython, PyPy, or Cython to increase execution speed significantly. On the other hand, the performance of a Java application can be easily optimized without using any additional tools.

45. Whats the difference between Java and Python?

A Key Difference: Duck Typing. The biggest difference between the two languages is that Java is a statically typed and Python is a dynamically typed. Python is strongly but dynamically typed. This means names in code are bound to strongly typed objects at runtime.

46. Why Java is faster than Python?

The phrase “dynamically typed” means that Python performs type checking at runtime, while statically typed languages like Java perform type checking at compile time. … Java is more efficient when it comes to performance speed thanks to its optimizations and virtual machine execution.

47. Why is Java more popular than Python?

Java is more powerful programming language because it support the pure object oriented programming language(means the class and object concept). … Python has a less pronounced learning curve and it is a language one can love, because of its beauty. Java does some things better than python, as multi-threading.

48. Why Python is the best?

Because of the run-time typing, Python’s run time must work harder than Java’s. … For these reasons, Python is much better suited as a “glue” language, while Java is better characterized as a low-level implementation language. In fact, the two together make an excellent combination.

49. Is Python older than Java?

Python itself is 23 years old and older than OCaml. Java, C, C++ are also older than OCaml and all 4 are highly used today.

50. Is Python the future?

Python programming language is dominating other programming languages such as C, C++ or Java. … It has undergone more than 25 years of the successful span and it is one of the fastest growing programming languages. Python itself reveals its success story and a promising future ahead.

51. What is Python best for?

Python is a general-purpose language, which means it can be used to build just about anything, which will be made easy with the right tools/libraries. Professionally, Python is great for backend web development, data analysis, artificial intelligence, and scientific computing.

52.Why Python is called Python?

When he began implementing Python, Guido van Rossum was also reading the published scripts from “Monty Python’s Flying Circus”, a BBC comedy series from the 1970s. Van Rossum thought he needed a name that was short, unique, and slightly mysterious, so he decided to call the language Python

53.Is it worth learning Python in 2022?

Python has now toppled Java to become the most taught programming languages in Universities and Academica. … If you want to learn Python in 2022, the Python Fundamentals from Pluralsight is the best online course to start with. JavaScript. Believe it or not but JavaScript is the #1 language of the web

54. What is a boolean in Python?

Boolean values are the two constant objects False and True. They are used to represent truth values (other values can also be considered false or true). In numeric contexts (for example, when used as the argument to an arithmetic operator), they behave like the integers 0 and 1, respectively.

55. What are conditionals in Python?

The Boolean expression in a conditional statement that determines which branch is executed. conditional statement. A statement that controls the flow of execution depending on some condition. In Python the keywords if, elif, and else are used for conditional statements.

Hope you find this set of Python interview questions and answers useful. Go through them and boost your confidence in interviews! We have purposefully touched most of the aspects of Python in this section. Continue learning. Learning is enriching!