Python Interview Question and Answers
Python Interview Question and Answers: Python is a high-level, interpreted programming language that was first released in 1991. It is designed to be easy to read and write, with a simple and clear syntax that emphasizes code readability.
Python is a popular language for a wide range of applications, including web development, data analysis, artificial intelligence, and scientific computing. It supports multiple programming paradigms, including object-oriented, functional, and procedural programming. Python has a large and active community, with extensive documentation and libraries available, making it a versatile and powerful tool for developers and data scientists alike, Here we are Providing Important Python Interview Question and Answers.
Question 1 : What is Python, and why is it popular?
Answer: Python is a high-level, interpreted programming language that emphasizes code readability and simplicity. It is popular due to its ease of use, vast library support, and flexibility across a wide range of applications.
Question 2 : What are the differences between Python 2 and Python 3?
Answer: Python 2 and Python 3 have several differences, including syntax differences, print statement differences, and Unicode support. Python 2 has reached its end-of-life and is no longer maintained, while Python 3 continues to be developed and supported.
Question 3 : What is a decorator in Python?
Answer: A decorator is a special type of function that can modify or enhance the functionality of another function. Decorators are often used to add new functionality to an existing function without modifying its source code.
Question 4 : What are the built-in data types in Python?
Answer: The built-in data types in Python include integers, floating-point numbers, complex numbers, strings, booleans, lists, tuples, sets, and dictionaries.
Question 5 : How do you handle errors and exceptions in Python?
Answer: Errors and exceptions can be handled in Python using the try-except statement. The code that might raise an exception is enclosed in the try block, and any code to handle the exception is included in the except block.
Question 6 : What is a lambda function in Python?
Answer: A lambda function is a small, anonymous function that can be created on the fly and used as an argument for other functions. Lambda functions are often used in functional programming to create higher-order functions that take functions as arguments.
Question 7 : What is the difference between a tuple and a list in Python?
Answer: Tuples and lists are both used to store collections of items, but tuples are immutable, while lists are mutable. Tuples are often used to store a fixed number of items, while lists are more flexible and can be modified as needed.
Question 8 : What is the purpose of the init method in Python?
Answer: The init method is a special method in Python classes that is called when a new instance of the class is created. It is used to initialize the object’s properties and set default values.
Question 9 : What are the advantages of using Python for web development?
Answer: Python is a versatile language for web development due to its simplicity, scalability, and extensive library support. Python’s Django and Flask frameworks make it easy to build web applications quickly, while Python’s support for machine learning and data analysis makes it a popular choice for building data-driven web applications.
Question 10 : How do you install external libraries in Python? Answer: External libraries can be installed in Python using the pip package manager. The command ‘pip install <library name>’ can be used to install a library, and ‘pip list’ can be used to view all installed libraries.
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