Top 50 Python Interview Question 2023

Top 50 Python Interview Questions You Must Prepare In 2023 Q1 What is the difference between list and tuples in Python LIST LIST vs TUPLES TUPLES Lists are mutable i e they can be edited Tuples are immutable tuples are lists which can t be edited Lists are slower than tuples Tuples are faster than list Syntax list 1 10 Chelsea 20 Syntax tup 1 10 Chelsea 20 Q2 What are the key features of Python Python is an interpreted language That means that unlike languages like C and its variants Python does not need to be compiled before it is run Other interpreted languages include PHP and Ruby Python is dynamically typed this means that you don t need to state the types of variables when you declare them or anything like that You can do things like x 111 and then x I m a string without error Python is well suited to object orientated programming in that it allows the definition of classes along with composition and inheritance Python does not have access specifiers like C s public private In Python functions are first class objects This means that they can be assigned to variables returned from other functions and passed into functions Classes are also first class objects Writing Python code is quick but running it is often slower than compiled languages Fortunately Python allows the inclusion of C based extensions so bottlenecks can be optimized away and often are The numpy package is a good example of this it s really quite quick because a lot of the number crunching it does isn t actually done by Python Python finds use in many spheres web applications automation scientific modeling big data applications and many more It s also often used as glue code to get other languages and components to play nice Learn more about Big Data and its applications from the Data Engineering Training Q3 What type of language is python Programming or scripting Ans Python is capable of scripting but in general sense it is considered as a general purpose programming language To know more about Scripting you can refer to the Python Scripting Tutorial Q4 Python an interpreted language Explain Ans An interpreted language is any programming language which is not in machine level code before runtime Therefore Python is an interpreted language Q5 What is pep 8 Ans PEP stands for Python Enhancement Proposal It is a set of rules that specify how to format Python code for maximum readability Q6 What are the benefits of using Python Ans The benefits of using python are 1 1 Easy to use Python is a high level programming language that is easy to use read write and learn 2 Interpreted language Since python is interpreted language it executes the code line by line and stops if an error occurs in any line 3 Dynamically typed the developer does not assign data types to variables at the time of coding It automatically gets assigned during execution 4 Free and open source Python is free to use and distribute It is open source 5 Extensive support for libraries Python has vast libraries that contain almost any function needed It also further provides the facility to import other packages using Python Package Manager pip 6 Portable Python programs can run on any platform without requiring any change 7 The data structures used in python are user friendly 8 It provides more functionality with less coding Find out our Python Training in Top Cities Countries USA Other Cities Countries India Bangalore Hyderabad Delhi Chennai Mumbai Pune Kolkata New York Chicago Atlanta Houston Los Angeles Boston Miami UK London Canada Toronto Australia UAE Dubai Ahmedabad San Francisco Philippines Q7 What are Python namespaces Ans A namespace in python refers to the name which is assigned to each object in python The objects are variables and functions As each object is created its name along with space the address of the outer function in which the object is gets created The namespaces are maintained in python like a dictionary where the key is the namespace and value is the address of the object There 4 types of namespace in python 1 Built in namespace These namespaces contain all the built in objects in 2 Global namespace These are namespaces for all the objects created at 3 Enclosing namespaces These namespaces are at the higher level or 4 Local namespaces These namespaces are at the local or inner function python and are available whenever python is running the level of the main program outer function Q8 What are decorators in Python Ans Decorators are used to add some design patterns to a function without changing its structure Decorators generally are defined before the function they are enhancing To apply a decorator we first define the decorator function Then we write the function it is applied to and simply add the decorator function above the function it has to be applied to For this we use the symbol before the decorator ChatGPT Tutorial ChatGPT Explained What is ChatGPT Edureka This is intended as a Crash Course on for Beginners has been growing in popularity exponentially But is still not you can use for yourself has been the buzzword for a while known to many people In this video I aim to show you the different ways in which now This yap lab was put on the throne 5 days after its release and has been changing the game ever since Q9 What are Dict and List comprehensions Ans Dictionary and list comprehensions are just another concise way to define dictionaries and lists Example of list comprehension is x i for i in range 5 The above code creates a list as below 4 0 1 2 3 4 Example of dictionary comprehension is x i i 2 for i in range 5 The above code creates a list as below 0 2 1 3 2 4 3 5 4 6 Q10 What are the common built in data types in Python Ans The common built in data types in python are Numbers They include integers floating point numbers and complex numbers eg 1 7 9 3 4i List An ordered sequence of items is called a list The elements of a list may belong to different data types Eg 5 market 2 4 Tuple It is also an ordered sequence of elements Unlike lists tuples are immutable which means they can t be changed Eg 3 tool 1 String A sequence of characters is called a string They are declared within single or double quotes Eg Sana She is going to the market etc Set Sets are a collection of unique items that are not in order Eg 7 6 8 Dictionary A dictionary stores values in key and value pairs where each value can be accessed through its key The order of items is not important Eg 1 apple 2 mango Boolean There are 2 boolean values