Username Generator

Websites and apps often suggest a username for new users, based upon some details the user provided. Write a function below called username$\_$from$\_$name which takes the user's full name, and returns a suggested username. The username should be lowercase, and with all spaces replaced with underscores

For example:

John Smith $$ john$\_$smith

Maria Fernanda Coro Vargas $$ maria$\_$fernanda$\_$coro$\_$vargas

$[]1$ # Write your 'username$\_$from$\_$name' function here

$2$

$3$

$4$ name $=$ 'Alice Adams'

$5$ print$($username$\_$from$\_$name$($name$))$

Improved Username Generator

A better way to suggest a username might be to extract part of their email address. Write a function below called username$\_$from$\_$email which takes an email address, then slices and returns the part before the a character. The username should be again be all lowercase $-$ you can assume that it is already a valid email address, but that it may have uppercase characters.