Python interview questions and answers: Functional Programming

Python: Lambda Functions, Map, Filter

Lambda Functions:

• What is a lambda function in Python, and how is it defined?
• Describe how lambda functions differ from regular functions in terms of syntax.
• How do you use lambda functions as arguments to higher-order functions like map, filter, and sorted?

Map, Filter, and Reduce Functions:

• What is the purpose of Python's map function?
• What does the Python filter function do, and how is it used?
• What is the reduce function, and what does it do?
• How is the reduce function different from map and filter?

List Comprehensions:

• What are Python list comprehensions? Explain the syntax and example of a list comprehension.
• How are list comprehensions different from using loops to generate lists?
• Provide an example of using a list comprehension to create a new list based on an existing list.
• Can list comprehensions include conditional expressions? If yes, how are they used?