comefrom: <doocs>0258.Add Digits_1.py
code: def addDigits( num: int) -> int:
      return 0 if num == 0 else (num - 1) % 9 + 1
masked: def sample_funcname ( var_0 : int ) -> int :
      return 0 if var_0 == 0 else ( var_0 - 1 ) % 9 + 1
  