Python developer interview questions

Prepare yourself to get that dream job with these Python developer interview questions.

June 26, 2023

5 minutes

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Python developer interview questions

Three people at the job interview, without their faces showing, the focus is on their hands on the table with written papers on it.
Image by ijeab on Freepik

Python is one of the most popular programming languages today. This language is used by one of the most popular companies worldwide. It is the perfect choice to create programs and apps. 

But, how to become a Python developer is not easy. But not impossible. You will need the necessary skills and practice. But also you will need to prepare for that job interview. Thus, we prepared a list of the 10 most popular Python developer interview questions. We also explained how to become a Python developer and what your job would be. 

What does a Python developer do?

A Python developer creates software and apps. They do this by using the Python programming language. They write code to solve problems. They also build functional and efficient programs. Python developer's work can include the following:

  • Web development
  • App development
  • Quantitative analysis
  • Data analysis and 
  • Artificial intelligence (AI)
  • Machine learning (ML)
  • Automation

They collaborate with teams to understand project requirements and develop appropriate solutions.

Such developers also test and debug code. This way, they ensure it works correctly and identify and fix any errors. Also, when they write code, they can use it on different platforms. This is very convenient for businesses as well.

How to become a Python developer

Two man, sitting at at table shaking hands.

You can become a Python developer even without previous experience. But, if you already have knowledge of another programming language, learning Python will be easy. This is because Python is one of the easiest languages to learn.

You can become a Python developer with patience and time for learning and practicing. You will also need to decide what type of Python developer you want to be. This includes:

  • DevOps Engineer
  • Artificial Intelligence (AI) and Machine Learning (ML)
  • Software Developer
  • Data analyst
  • Data scientist

Once you decide that, you can start your learning journey. Start with learning the basics and develop your skills. Read coding books and explore the power of Python. Get into the Python community and start expanding your knowledge. 

Python developer interview questions

A young woman in a pink blouse sitting at the office place, having a job interview with the recruiters, looking away from the camera with her notebook and laptop on the desk in front of her.

Once you start your search for a job in the company, you need to get prepared. Even if you are looking for a remote job as a Python developer. We covered:

  • Python interview questions for junior developers
  • Python interview questions for intermediate developers
  • Python interview questions for experienced developers

Python interview questions for junior developers

  1. What is Python?
  2. What does it mean when we say that Python is interpreted language?
  3. What is Scope in Python?
  4. Python advantages 
  5. Difference between a shallow copy and a deep copy
  6. What are the differences between lists and tuples?
  7. What is a dynamically typed language?
  8. What are Python Modules?
  9. What is pass in Python?
  10. What is a dictionary in Python?
  11. What are Keywords in Python?
  12. What are functions in Python?
  13. What are unit tests in Python?
  14. What are data frames?
  15. How Is Multithreading Achieved in Python?
  16. Explain local and global variables in Python
  17. How to generate random numbers in Python?
  18. Explain the purpose of the Pass Statement.
  19. How does break, continue, and pass work?
  20. Explain what’s Flask and its benefits.

Python interview questions for intermediate developers

  1. How is Python interpreted?
  2. How to manage Memory in Python?
  3. How to copy an object in Python?
  4. What are Python namespaces?
  5. What are Python iterators?
  6. What is a map function in Python?
  7. Explain its Scope Resolution
  8. What is pickling and unpickling?
  9. Explain what Python generators are.
  10. What are decorators?
  11. How to delete a file in Python?
  12. What are Dict and List comprehensions?
  13. What is lambda in Python?
  14. What is the use of help() and dir() functions?
  15. What is the difference between xrange and range in Python?
  16. Explain the difference between .py and .pyc files.
  17. What are Dict and List comprehensions?
  18. Explain the difference between NumPy and SciPy.
  19. How to remove duplicate elements from a list?
  20. How to add and remove values to a Python array?

Python interview questions for experienced developers

  1. What is self in Python?
  2. What is the lambda function?
  3. What are dataframes?
  4. What is SVM?
  5. What is regression?
  6. How will you create a new column in pandas using values from other columns?
  7. How can you copy objects in Python?
  8. What are various functions that grouby can use in pandas?
  9. How can you check if Pandas Dataframe is empty or not?
  10. How does Python Flask handle database requests?
  11. Explain functional programming. 
  12. How to create a Series from a List, Numpy Array, and Dictionary?
  13. What is monkey patching?
  14. What is Reindexing in pandas?
  15. What is the difference between / and // operator?
  16. Explain and give an example of vstack() in numpy?
  17. How to reverse the rows of a data frame?
  18. Explain the Python Path environment variable.
  19. Explain the Python "re" module's split(), sub(), and subn() functions.
  20. Create a Python program to produce a Star triangle.

In conclusion 

How to become a Python developer is a journey. Take your time and develop your skills. Once you are certain in your knowledge, search for a job. There are many ways you can get hired. You can work as a freelancer, in IT companies, or be part of an outsourcing team. 

Whichever you decide, you need to get prepared for a job interview. But this is not an easy job. It’s stressful, uncertain, and unpleasant. Luckily, there are ways to get you prepared. We provided a list of 60 Python developer interview questions. We divided them into three categories. All questions are tailored to your skill level. Go through them and get that dream job of yours.

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