comefrom: <doocs>2063.Vowels of All Substrings_1.py
code: def countVowels( word: str) -> int:
      n = len(word)
      return sum((i + 1) * (n - i) for i, c in enumerate(word) if c in 'aeiou')
masked: def sample_funcname ( var_0 : str ) -> int :
      var_4 = len ( var_0 )
      return sum ( ( var_6 + 1 ) * ( var_4 - var_6 ) for var_6 , var_9 in enumerate ( var_0 ) if var_9 in 'aeiou' )
  