python interview questions

Most asked Python Interview Questions for Freshers


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Introduction: Python Interview Questions

Python has become the second most popular programming language. It is only behind the “Rust”, in the survey conducted by the Stack Overflow. Being popular, most of the freshers tend towards the language. And that’s why for the interview, questions on python are important.

And so before the interview, everyone has to prepare both theory and the practical questions.

So we have made a collection of mostly asked python interview questions, those will help you cover both theoretical and practical approaches.


Choose a job you love, and you will never have to work a day in your life.
 —Confucius

Now, let us see all the python interview questions and answers. First of all, the basic question.

Download this article as a python interview questions cheat sheet so you can refer it later for interview.

Commonly Asked Python Interview Questions

What is Python?

Python is a high-level, interpreted general-purpose programming language. Interpreted means the python program does not need to be compiled before it is run. [Most basic python interview question]

What are the features of Python?

Some notable features of the Python are :

  • Easy To Understand
  • Portable
  • Object-Oriented
  • Open Source
  • Interpreted Language
  • Large Libraries Supported

What are the list, tuple, and dictionary? What is the difference between them?

The list is a data type in which multiple values are stored in an ordered sequence. You might find this similar to the array in other programming languages. The list can be defined by using any name and the elements inside the List are written inside []. The elements can also be called as items and are written in ‘ ‘ if they are characters.

Examples :

numbers=[1,2,3,4]

names=[‘shubham’,’shalaka’,’pratik’,’piyush’]

The ‘tuple’ datatype is somewhat similar to the List but has its own properties. Tuple’s values cannot be modified in any desirable way, unlike the ‘list’. So you can not modify, append, remove elements from the Tuple.
Tuple can be declared similarly as the list but instead of [], it uses ().

Example: numbers=(1,2,3,4)

Just like lists, the Dictionary also has many items. But as there are indexes in the list, the dictionary has pairs of keys and values. Let us see the simple syntax of the dictionary. Take an example given above on the list.

dict1={1:’Shubham’, 2:’Shalaka’, 3:’Pratik’, 4:’Piyush’}

The dictionary is not ordered. And the elements can be called using the keys. Here, the keys are 1, 2, 3, and 4.

Complete the code

Python Interview Questions
Python Interview Questions

What are some inbuilt data types in python?

  • Immutable built-in datatypes of Python
    • Numbers
    • Strings
    • Tuples
  • Mutable built-in datatypes of Python
    • List
    • Dictionaries
    • Sets

What is inheritance in python?

Inheritance derives the properties of one class to or inherits it from some another class. Python supports the following types of inheritance.

  1. Single Inheritance – where a derived class acquires the members of a single superclass.
  2. Multi-level inheritance – a derived class d1 in inherited from base class base1, and d2 are inherited from base2.
  3. Hierarchical inheritance – from one base class you can inherit any number of child classes
  4. Multiple inheritance – a derived class is inherited from more than one base class.
Python Interview Questions

Write some of the common errors.

TypeError: Occurs when the expected type doesn’t match with the given type of a variable.

ValueError: Occurs When an expected value is not given. if you are expecting 4 elements in a list and you gave 2.

NameError: Occurs When trying to access a variable or a function that is not defined.

IOError: Occurs When trying to access a file that does not exist.

IndexError: Accessing an invalid index of a sequence will throw an IndexError.

KeyError: When an invalid key is used to access a value in the dictionary.

What is a decorator?

Python decorator adds functionality to another function, without modifying it.

How to import a module/library?

using the import keyword, we can import any library or module in the code.

Example: import sklearn

here, sklearn is a machine learning library.

What is the difference between deep and shallow copy?

Deep copying does not change the original function which is copied. While deep copying makes copies of original function into a new one. Similarly, Shallow copying saves the reference of the original one.

More like deep copying copies the structure only. And shallow copying copies the function. As well as structure. For shallow, we can make changes to one function and they will get reflected in another. And the same can not be said about the deep copy.

So, these are some of the python interview questions. Finally, we are sure these will help you rock your next interview. Also, any questions and suggestions are welcome.

Also read: Linux Commands Cheat sheet: Basic Linux Commands


Shubham

Shubham is an ambitious coder. He mostly writes about cloud computing and upcoming technical gadgets. He has widely influenced by the technological world and love to express his judicial opinion on happening activities. And yes he's massive Liverpool Fan.