7.1.5 Initials (Intro to Computer Science in Python 3)

Here is the assignment description:

Write a function called initials that will take a first and last name and return their initials using the following format:

initials("Tracy", "Turtle")
# => "T.T."

It is unclear that no output is required for this assignment to be complete. Can you change the wording to something along the lines of:

Write a function called initials that will take a first and last name and return their initials using the following format:

initials("Tracy", "Turtle")
# => "T.T."

Note: In order to successfully complete this assignment, you only need to create the function that returns the information requested. The result does not need to be printed on the screen.