comefrom: <qiyuangong>066_Plus_One_2.py
code: def plusOne( digits):
      ls = len(digits)
      for index in reversed(range(ls)):
          if digits[index] < 9:
              digits[index] += 1
              return digits
          else:
              digits[index] = 0
      digits.insert(0, 1)
      return digits
masked: def sample_funcname ( var_0 ) :
      var_2 = len ( var_0 )
      for var_5 in reversed ( range ( var_2 ) ) :
          if var_0 [ var_5 ] < 9 :
              var_0 [ var_5 ] += 1
              return var_0
          else :
              var_0 [ var_5 ] = 0
      var_0.insert ( 0 , 1 )
      return var_0
  