Top 20 Python Interview Questions and Answers (2024)

May 15, 2024
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If you are an engineering student or completing your studies from an engineering background, you know the importance of understanding programming languages. Especially if you want to work in top IT companies then you should know a programming language.

Nowadays many students want to get jobs in IT companies because of the availability of more job opportunities in the sector. According to NASSCOM, the Indian IT industry has witnessed a growth of 15.5% year-on-year in revenue, which is expected to grow in the coming years and will create more jobs.

Also, private companies offer higher salary packages to their employees, and career growth is faster. So many students want to pursue their careers in IT companies in different roles. But one thing is very important if you want to start a career in IT companies, then you should have strong knowledge of different programming languages like Python, Java, C, C++, Web Development, etc.

Among all the programming languages, Python is one of the top programming languages. In the interview, the recruiter asks questions related to Python to test your knowledge. So here, we will mention the important Python Interview Questions which can be asked in an interview.

In this article, we will discuss some common Python interview questions which will help you prepare for the interview.

Top Python Interview Questions and Answers

Here we will discuss the top Python Interview Questions for Freshers which are commonly asked in an interview.

What is Python? What are the advantages of Python?

This is one of the Python basic interview questions. Python has built-in objects, modules, threads, exceptions, and automatic memory management. It is a simple and easy-to-use portable, expandable, built-in data structure and open-source.

How do we use memory in Python?

This is one of the important interview questions on python asked by the interviewer. Python memory is managed by the Python heap space. It is a private heap where all Python objects and data structures are held. The Python memory manager allocates Python heap space for Python objects. The Core API provides access to some programming tools for programmers. Python also includes a built-in garbage collector that recycles all unused memory, frees it, and makes it available in the heap space.

What is the difference between by value and by reference in Python?

This is one of the python interview questions which are mostly asked by the interviewer. In Python, everything is an object, and all variables refer to objects. Function references set values. As a result, you will not be able to change the value of the references. If the item is adjustable, you can replace it.

List five advantages of using Python.

The following are five advantages of Python-

  • Python has a large standard library for most Internet platforms, such as email, HTML, and so on.
  • Python does not require manual memory management as the interpreter automatically issues and releases memory for new variables.
  • The usage of square brackets makes it easier to read.
  • It is simple to learn.

What are some of Python’s applications?

This is one of the most common Python interview questions. Almost every recruiter asks freshers. Python is used in a variety of software domains. Such as:

  • Internet and web development
  • Game playing
  • Applications in science and computation
  • Language development
  • Image processing and visual design applications
  • Desktops with graphical user interfaces App
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How do Django, Pyramid, and Flask differ from one another?

Many students comment on this question as commonly asked in their Python Interview Questions. Flask is a “microframework” designed for small applications with specific needs. You don’t need to use external libraries in Flask. And it is now ready for use.

Pyramids are used for larger projects. This gives developers flexibility and allows them to use the right tools for their projects. You can choose the database, URL structure, template style, and more. Like Pyramid, we use Django for large applications. It includes an ORM.

What is the difference between Break, Continue, and Pass statements in Python?

This question can be asked in most python interview questions students face. These statements are loop control statements since they help to vary the execution phase from the typical flow.

  • Break statement in Python: This statement ends a loop or a statement and passes control to the next statement.
  • Python Continue: Rather than halting the iteration when a certain condition is met, this statement forces the execution of the following iteration.
  • Pass in Python: This statement helps the code write syntactically and skip the execution. We also consider it a null operation.

What is the meaning of NumPy and SciPy in Python?

One of the most asked Python Interview Questions. SciPy stands for Scientific Python and NumPy for Numerical Python. In addition, NumPy is the basic library for defining arrays and solving elementary mathematical issues. But SciPy is used for other issues like numerical integration, optimization, and machine learning.

Python Questions for Experienced Professionals

What is Python’s Tuple Matching?

Tuple matching is a method of grouping tuples in Python by matching the second member in each tuple. In python programming, it is accomplished by utilizing a dictionary and inspecting the second member in each tuple. In addition, we can create new tuples by combining parts of existing tuples.

What is the Python enumerate() function?

One of the top Python coding interview questions asked to experienced interviewees. Enumerate() is a built-in Python method that assigns an index to each item in an iterable item. It loops over iterable objects keeping track of the current object and returns the object in the enumerable form. The list() method can be used in a for loop to convert this object into a list.

Tell me the best way to convert a number to a string.

This is one of the most often asked python interview questions. The built-in str() function can be used to convert. We can utilise additional built-in functions like oct() or hex() to get an octal or hexadecimal representation ().

Does Python have a main() function?

Yes, it does. It is executed automatically whenever we run a Python script. We may also utilize the if statement to overrule the natural flow of things.

What are docstrings in Python?

Documentation strings, often known as docstrings, are multiline strings used to document a specific code segment. Docstrings should ideally define a function or method and should be included in triple quotes. Because they aren’t allocated to any variables, docstrings can be used as comments.

What are String Concatenation, Indexing, and Slicing?

  • Concatenation– It joins two Strings together.
  • Indexing– It retrieves a single character from a string.
  • Slicing– It gets multiple characters from a string at once.

What exactly is PEP 8?

This is one of the commonly asked Python Interview Questions. PEP 8 is a paper that helps us in providing the rules for writing Python code. It was written in 2001 by three programmers, Guido van Rossum, Barry Warsaw and Nick Coghlan. It stands for Python Enhancements Proposal, and its main goal is to make Python code more readable and consistent.

What is the Swap case() function in Python?

This is also one of the important python interview questions. It’s a string function that changes all uppercase letters to lowercase letters and vice versa. Its purpose is to change the string’s case. This function duplicates the string containing all of the characters in the swap case. It generates a small case string in lowercase and vice versa. All non-alphabetic letters are ignored by default.

Jobs in Python

There are many opportunities for students aspiring to start their career after studying python. Here is a list of a few jobs.

Data Scientist

If you are interested in working as a software engineer, you can choose Data Scientist as a career. Data Scientist is a professional responsible for collecting, analysing, and interpreting vast amounts of data. It is an advanced role for many technical roles, Mathematicians and Computer professionals. As a data scientist, you can work in IT companies, non-IT companies, and even banks. Data Scientist’s average annual salary is INR 10.6 LPA.

Full-Stack Developer

You can become a full-stack developer if you have knowledge and interest in programming languages, especially Python. Top companies looking for freshers and experienced who have good programming knowledge for this job role. Their main work is related to coding.
You will design and build a website according to the demands of your clients with the help of HTML/CSS. As a full-stack developer, you can work in IT companies. Full-Stack Developer’s average annual salary is INR 6.5 LPA.

Software Developer

If you are interested in coding, you can choose a career as a software developer. This is a high-demand job in IT companies. If you know programming languages like C, C++, JAVA, Python, and Ruby, then you can try for good companies for this job role.
The job role of software developers is to create innovative software programs and applications as per the needs of the customers. Software Developer’s average annual salary is INR 5.0 LPA.

Machine Learning Expert

There is also a good chance to work as a Machine Learning Expert. Nowadays, it has become a more demanding job. Top IT companies look for freshers and experienced for this job role. If you have advanced knowledge of programming languages and machine learning, then this is a great career option. Machine Learning Expert’s average annual salary is INR 7.5 LPA.

Cyber Security Analyst

The main job of a cyber security analyst is to check and protect the security of all the important sites. It is also an interesting and highly sought-after job. For this job role, you should know programming. And basic programming skills, app development, etc. As a cyber security analyst, you can join IT companies, banks, etc. A Cyber Security Analyst’s average annual salary is INR 5.0 LPA.

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Preparing for Python Interview

Everyone knows the importance of interviews for getting hired. Especially if you want to apply for IT jobs, in an interview, recruiters ask maximum questions about programming knowledge. That’s why it is very important to know about all programming languages. Must know C, C++, Java, Python and JavaScript. All languages are equally important, depending on the role you are applying for. Most of the students do not have proper guidance on Python Interview Questions.

Although many students find Python interviews difficult to crack, if you do not know the pattern of asking questions in an interview, you may face trouble. By preparing these questions and answers, you will easily be successful in the interview. Also, remember that the type of questions may be different for freshers and experienced candidates. So, prepare accordingly.

If you prepare all these questions before your interview, you will feel more confident about the topic. And your chances of selection also increase.

Frequently Asked Questions

Q.1 What are some good Python interview questions?

Ans. Python Interview Questions depend on various grounds. Like if you are fresher then the interviewer doesn’t ask advanced questions. But if you are an experienced candidate then expect to tackle some advanced questions.

Some good Python Interview Questions are:

  • What is Python? What are the advantages of Python?
  • What is the difference between by value and by reference in Python?
  • What is the Python enumerate() function?
  • What are docstrings in Python?

Q.2 How do I prepare for a Python developer interview?

Ans. To prepare for Python Developer Interview, you need to have a deep knowledge of the subject. Only with the proper understanding, you can tackle all the questions easily. Apart from this, you can also prepare common Python Interview Questions asked by the interviewer.
If you need help with Python, the Chegg experts will help you find the solution. Customised expert guidance and a detailed overview of the complex topic will help you in your preparation.

Q.3 How do I add Python to my CV?

Ans. If you have knowledge of Python then you can add it to your CV. Whether you are fresher or experienced adding python to your CV will enhance your resume. With python knowledge, you can work as a Full-Stack Developer, software developer, Cyber Security Analyst, etc. You can find jobs in various industries like the banking sector, IT companies, MNCs etc.

Q.4 What is Python’s basic knowledge?

Ans. What is Python is one of the basic interview questions asked by the interviewer? If this question is asked you can answer –
‘Python has built-in objects, modules, threads, exceptions, and automatic memory management. It is a simple and easy-to-use portable, expandable, built-in data structure and open sources’. Besides, you can also prepare commonly asked python coding questions.

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