In this question, you are asked to solve the problem set 4 "variable name" question again, but this time you are required to solve it using "functional programming" tools we introduced in this course.

Python's if name equals main construct provides a standard entry point to run scripts and standalone apps. Python has become a popular programming language due largely to its highly readable syntax ...

A variable's name is known as an identifier. The identifier given to a variable usually follows certain rules: It can contain letters and numbers but must start with a letter. It must contain at least ...