To write functions meant to be used in sequence

A common problem$-$solving pattern is to call several functions in sequence, with the return value$($s$)$ of

each function call used as the argument$($s$)$ for the NEXT function call. You$$ll practice this technique here.

Generating a Username

Our overall goal is to generate a partially randomized username based on a user$$s personal initials. But

we$$ll divide the work up into $3$ separate functions, which the main part of your script will then call in order.

Normally, when you are breaking up a problem into parts, it$$s up to you to decide how many functions to

have and what their inputs and outputs should be$.$ However, since this is for practice, in this case just be

sure to read the instructions carefully and follow them exactly.

Function $1$: Getting the user$$s name

Write a function that uses the input$()$ function to obtain the user$$s first, middle, and last name via console

input. The user can leave some names blank $($which means the matching name will get set to the empty

string$).$ Note that it$$s ok to put console input inside a function like this, so long as it$$s the MAIN purpose of

the function!

The program should format each name such that $($no matter what the user types$)$ the first letter of each

name is capitalized and the rest are all lower case $($hint: use the string method $.$title$()).$

Finally, the function should return all $3$ names. In Python, having multiple return values is easy! Just sepa$-$

rate the values you want to return with commas after the return statement, and when calling the function,

put multiple variables on the left hand of the equal sign to "collect" each return value. Here is an example:

def coords $()$:

return $10,20$

x $,$ y $=$ coords $()$

Function $2$: Converting to initials

Your next function should accept the first, middle, and last name as parameters, and return that person$$s

initials $($i$.$e$.$ the first letter of each of their names$)$ as a single string.

Recall that one $($or more$)$ of the names may have been left blank. If this happens, then use a capital letter

$"$X$"$ for that name in the person$$s initials. For example, "Ash Ketchum" should have initials of "AXK", and

"Pikachu" should have initials of $"$PXX$".$

Function $3$: Generating the username

Your final function should accept a person$$s initials as a parameter and return a username consisting of the

initials converted to lower case and followed by a random $3$ digit number between $100$ and $999($inclusive$).$

Hint: import the random module and use the $.$randint$()$ method.

Main program

The "main" part of your program should call each function in sequence, passing along their return values

as needed, and then display a message to the user indicating their generated username.

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