Python Interview Questions and Answers for 2023

Juliet D'cruz

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Python Interview Questions and Answers for 2023

Due to its performance and robust libraries, Python is the most used programming language at top companies including Intel, IBM, NASA, Pixar, Netflix, Facebook, JP Morgan Chase, Spotify, and many others.

You must be able to respond to some crucial Python Interview Questions in order to move on to the Python Online Assessment Round and Python Interview Round in order to work for these businesses and organizations as a Python developer. Read python interview questions and answers in this article;

What is Python, exactly?

Python, one of the most widely used and well-liked programming languages, was developed by Guido van Rossum and first made available on February 20, 1991. Python is a free and open-source programming language that is simple to learn for developers thanks to its concise syntax.

It enables object-oriented programming and is most frequently used for general-purpose programming.

Data Science, Machine Learning, Deep Learning, Artificial Intelligence, Scientific Computing, Scripting, Networking, Game Development, Web Development, Web Scraping, and more fields all use Python.

Novice-friendly Python interview questions

  1. Exactly what is Python? Name a few of the most well-known Python software applications

Popular high-level general-purpose programming language Python is used frequently. It was created in 1991 by Guido van Rossum, and it was improved upon by the Python Software Foundation. It was developed with code readability in mind, and because of its syntax, programmers may express their ideas in less code.

It accomplishes the following goals:

Mathematics is a challenging topic in software development, particularly in web development, game development, and system scripting.

  1. In the present context, what benefits can using Python as a tool provide?

Utilizing Python has the following benefits:

  •         Language that is dynamically typed is an advanced language known as an object-oriented programming language.
  •         Extensive support Libraries
  •         There are modules from outside sources.
  •         Growth of the community and open source
  •         Across all OS systems, portable, and interactive
  1. Is Python an interpreted or a compiled language?

In actuality, Python is a language that is both partially compiled and partially interpreted. When we run our code, which internally produces byte code, the compilation process starts. The Python virtual machine (p.v.m) then transforms this byte code into the underlying platform (machine+operating system).

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

‘#’ is used to make comments on everything that appears on the line after it.

  1. What separates mutable data types from immutable data types?

Data types that are mutable can be altered, which allows for runtime changes. Examples include lists, dictionaries, etc.

Immutable data types are unchangeable during execution. Tuple, String, and so forth.

  1. Are arguments supplied by value or by reference in Python?

All variables in Python are references to the objects, which are themselves all objects. You cannot alter the value of the references since the functions set their reference values. If the item is malleable, though, you can alter it.

  1. What distinguishes a Set from a dictionary?

The set is a group of different data kinds that is not ordered, can be altered, and does not have any duplicate elements.

A dictionary in Python is an unordered group of data values that can be used, like a map, to store data values.

  1. Exactly what does List Comprehension entail? Give an instance

List comprehension is a syntactic device that facilitates the creation of a list from an iterable that already exists.

As an illustration:

  •         my_list = [i for i in range (1, 10)]
  1. Exactly what does a lambda function do?

A lambda function is an anonymous function. There is only one statement and an infinite amount of parameters for this function. As an illustration

  •         print x*y(a(7, 19))
  1. What does a pass mean in Python?

Pass is a placeholder in a compound statement that indicates there should be a blank space left there and no text needs to be entered. It also means to perform no operation.

  1. In Python, how are / and // different from one another?

// stands for floor division, whereas / means accurate division. As an illustration

  •         5//2 = 2
  •         5/2 = 2.5
  1. How does Python handle exceptions?

Try, except, and finally are the three fundamental keywords that are utilized to handle the recovering process and collect exceptions. The programming block that looks for errors is called try. The block is carried out unless there is an error.

The final block’s beauty is that it executes the code after attempting to find an error. This block is executed regardless of whether or not an error occurred. Finally, block is used to do the necessary cleanup operations on objects/variables.

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  1. What is the Python swapcase function?

It is the function of a string that changes all uppercase characters to lowercase and vice versa. It is used to change the string’s current case. This technique makes a copy of the string that includes all of the characters from the swap case. As an illustration

  •         string = “GeeksforGeeks” string.swapcase() –> “gEEKSFORgEEKS” string.swapcase() –> “gEEKSFORgEEKS”
  1. What is the difference between a for loop and a while loop in Python?

The “for” Loop is commonly used to iterate through the items of different collection types such as List, Tuple, Set, and Dictionary. Developers employ a “for” loop that includes both the start and finish criteria. The “while” loop, on the other hand, is the actual looping functionality used in any other programming language. Programmers employ a Python while loop with only the end conditions.

  1. In Python, can we pass a function as an argument?

Yes, a function can take several parameters, including objects, variables (of the same or other data types), and functions. Because functions are objects, they can be provided as parameters to other functions. Higher-order functions are functions that can be passed as arguments to other functions.

More information can be found in the article: Passing function as an argument in Python.

  1. What exactly are *args and *kwargs?

In Python, utilize the unusual syntax *args and **kwargs in the function specification to pass a variable number of arguments to a function. It is used to pass a keyword-free, variable-length argument list.

The variable we associate with the * becomes iterable when we use the *, allowing us to perform actions on it such as iterating over it and using higher-order operations such as map and filter.

  1. Is Python’s indentation required?

In Python, indentation is required. By employing Python indentation, a Python interpreter can be alerted that a group of statements belongs to a specific block of code. Indentations make code easier to understand for developers in all programming languages, but it is especially critical in Python to indent the code in a precise order.