Python initial generator using regular expressions

python_initial_generator.py

#Extract users initials

from cs50 import get_string
import re

def main():
	userName = get_string("enter full name: ")
	print(getInitials(userName))
	

def getInitials(fullName):
	list = re.findall(r'(^[a-zA-Z]|(?<=\s)[a-zA-Z])', fullName)
	return '.'.join([i.upper() for i in list])


if __name__ == "__main__":
	main()