Python Cheat Sheet - Interview Questions

The Python Cheat Sheet - Interview Questions is a document that provides commonly asked questions and answers related to Python programming, specifically for job interviews. It helps candidates prepare and review key concepts and code snippets in Python before an interview.

FAQ

Q: What is Python?
A: Python is a high-level programming language that is widely used for web development, scientific computing, data analysis, artificial intelligence, and more.

Q: What are the key features of Python?
A: Some key features of Python include its simplicity, readability, extensive standard library, and support for multiple programming paradigms.

Q: How do you comment in Python?
A: In Python, you can comment a single line using the '#' symbol or comment multiple lines using triple quotes ('''comment''').

Q: What are the data types in Python?
A: Python has several built-in data types, including integers, floats, strings, lists, tuples, sets, and dictionaries.

Q: What is the difference between list and tuple?
A: Lists are mutable, meaning their elements can be modified, added, or removed, while tuples are immutable and cannot be changed once created.

Q: What is a module in Python?
A: A module in Python is a file containing Python code that defines functions, classes, and variables that can be imported and used in other programs.

Q: What is the difference between '==' and 'is'?
A: The '==' operator compares the values of two objects, while the 'is' operator compares the memory addresses of two objects.

Q: How do you handle exceptions in Python?
A: Exceptions in Python can be handled using the try-except block, where you try a block of code and catch any exceptions that may occur.

Q: What is a virtual environment in Python?
A: A virtual environment in Python is a self-contained directory that contains a Python interpreter and its own installed packages, separate from the system's Python installation.

Q: How do you install packages in Python?
A: Packages can be installed in Python using the pip package manager, which is included by default in most Python installations. You can use the 'pip install' command followed by the package name.