Exercise

Lambda functions

If you have ever used the *apply family of functions (such as sapply() and lapply()) in R, there's a good chance you might have used anonymous functions. Anonymous functions in Python are known as lambda functions.

These functions are not too different from a regular function. The keyword in a lambda function is lambda instead of def. These functions are typically used for functions that are 'one-line' long.

For example, a function that returns the cube of a number can be written as: 

cube_lambda = lambda x: x**3
print(cube_lambda(3))

27

Instructions

100 XP
  • Convert the sq_func() regular function into a lambda function and call it sq_lambda.
  • Use the lambda function to print the results when 3 is passed into the function.