Python Lambda

What is a lambda function in Python?

• A large, named function that can take multiple arguments and expressions

• A Python module for functional programming

• A small, anonymous function that can take any number of arguments but only one expression

• A data type for storing sequences of characters

What is the correct syntax for a lambda function in Python?

• lambda [arguments] : [expression]

• function [arguments] : [expression]

• def [arguments] : [expression]

• [arguments] => [expression]

Why would you use a lambda function?

• To create multi-line functions

• To define a new class

• To import modules

• As an anonymous function inside another function for a short period of use

How can lambda functions be used in Python?

• As a replacement for all function definitions

• To perform complex mathematical operations

• Inside another function to generate a function that performs a specific operation

• To create new Python syntax

What is the result of this lambda function: x = lambda a, b, c : a + b + c; x(5, 6, 2)?

• 13

• None of the above

• 5

• 6

Which of the following is NOT a valid use case for lambda functions?

• Quickly creating small functions without naming them

• Defining new classes and objects

• Simplifying code readability when used appropriately

• Using as an argument to higher-order functions like map() and filter()

What does the 'lambda' keyword in Python represent?

• A conditional statement

• A special data type

• A loop construct

• An anonymous function

Which of the following is true about lambda functions?

• They are defined with the def keyword

• They can take any number of arguments but only have one expression

• They can have any number of return statements

• They can only include multiple expressions

How do you call a lambda function?

• Using the call() method

• By assigning it to a variable and then using that variable like a function

• By its name

• Lambda functions cannot be called

What is the output of the following code: myfunc = lambda a : a * 2; print(myfunc(5))?

• None

• 10

• 2.5

• Error