Many documents use a specific format for a person's name. How do I write a program whose input is: firstName middleName lastName and whose output is: lastName, firstInitial.middleInitial. Ex: If the...

Many documents use a specific format for a person's name. How do I write a program whose input is:

firstName middleName lastName

and whose output is:

lastName, firstInitial.middleInitial.

Ex: If the input is:

Pat Silly Doe

the output is:

Doe, P.S.

If the input has the form:

firstName lastName

the output is:

lastName, firstInitial.

Ex: If the input is:

Julia Clark

the output is:

Clark, J.

In python code.