input: 
  def remove_vowels(string: str) -> str:
      """Remove all vowels from the given string.
      >>> remove_vowels("Hello World")
      'Hll Wrld'
      >>> remove_vowels("Python Programming")
      'Pythn Prgrmmng'
      >>> remove_vowels("AEIOUaeiou")
      ''
      """
      vowels = ['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U']
      return ''.join([char for char in string if char not in vowels])
  
output:     vowels = ['a', 'e', 'i', 'o', 'u', 'A', 'E', 'I', 'O', 'U']
      return ''.join([char for char in string if char not in vowels])