Intro to Python Classwork: Name Info
Write a Python program named "NameInfo.py" that has the user
enter his/her first name, followed by his/her last name.  Each
name should be stored in a separate variable.  Then have your
program display the following:

Line #1) The user's last name, a comma, a space, and the first name
Line #2) The user's initials
Line #3) The last three letters of the first name
Line #4) The fourth letter of the last name
Line #5) The total number of letters in the full name
Line #6) The last name with the order of the letters reversed

Assume that the user enters only letters (no punctuation or spaces),
that each name contains at least five letters, and that each name
starts with a capital letter.

Your program's output should be formatted in a manner similar to
what is shown below.  You do not need to perform error trapping
for the user input, and you may put all of your code into the
main area of the program (that is, you are not required to create
separate functions).  This program should not import or use any
external functions.


As always, all of your code must be your own, written entirely and
only by you within your online CodeHS.com account.  You must never
copy/paste, receive, view, or in any way use code that was created
or modified by another person, entity, or artificial intelligence.


Example Program Run
-------------------
What is your first name?  David
What is your last name?  Goldsmith

Goldsmith, David
DG
vid
d
14
htimsdloG


Advanced Option #1
Display the first and last names with the letters intermingled.
Within each name the letters should be displayed in order, but
your program should alternate between the first and last names.
For example, with a first name of "David" and a last name of
"Goldsmith", your program would display "DGaovliddsmith".  As
you can see from that example, if your program runs out of
letters from one of the names, then the remaining letters in
the other name should be displayed at the end.

Advanced Option #2
In addition to displaying the information described above, also
have your program display the number of occurrences (the frequency)
of each letter in the user's full name (ignoring case).  In other
words, tell how many times each letter appears.  This advanced
option may be completed along with, or instead of, the above
advanced option.