Can someone help me with Exercise 7.1.5: Initials on codehs.

7.1.5 Codehs:

Write a program that gets a string containing a person's first, middle and last names, and then display their first, middle and last initials. For example, if the user enters John William Smith, the program should display J. W. S. [In python]

first = input("First name: ")

middle = input("Middle name: ")

last = input("Last name: ")

print(first[0]+". "+middle[0]+". "+last[0]+".")

Explanation:

This line prompts user for first name

first = input("First name: ")

This line prompts user for middle name

middle = input("Middle name: ")

This line prompts user for last name

last = input("Last name: ")

This line prints the name initials

print(first[0]+". "+middle[0]+". "+last[0]+".")