input: 
  def has_vowel(inputString: str) -> str:
      """ Detects and returns the first vowel in the given string.
      >>> has_vowel("Hello World")
      'e'
      >>> has_vowel("Python Programming")
      'o'
      """
  
output:     vowels = "aeiouAEIOU"
      for char in inputString:
          if char in vowels:
              return char
      return ""