text: #!/usr/bin/env  python3
  
  #############################################################################
  #                                                                           #
  #       Program purpose: Checks if a letter is a vowel.                     #
  #       Program Author : Happi Yvan <ivensteinpoker@gmail.com>              #
  #       Creation Date  : July 14, 2019                                      #
  #                                                                           #
  #############################################################################
  
  # URL: https://www.w3resource.com/python-exercises/python-basic-exercises.php
  
  
  def is_vowel(some_lett):
      return some_lett[:1] in "aeiou"
  
  
  if __name__ == "__main__":
      user_lett = input("Enter a letter to check if vowel: ")
      if is_vowel(user_lett):
          print(f"Letter {user_lett} is a vowel")
      else:
          print(f"Letter {user_lett} is NOT a vowel")
  