input: 
  def vowelCheck(inputString: str) -> str:
      """This function detects the first vowel in a given string.
      >>> vowelCheck("Hello World")
      'e'
      >>> vowelCheck("Python Programming")
      'o'
      """
      vowels = ['a','e','i','o','u','A','E','I','O','U'] 
      for x in inputString: 
          if x in vowels: 
              return x
  
output:     return ''