comefrom: <qiyuangong>136_Single_Number_3.py
code: def singleNumber( nums):
      res = 0
      for num in nums:
          res ^= num
      return res
masked: def sample_funcname ( var_0 ) :
      var_1 = 0
      for var_2 in var_0 :
          var_1 ^= var_2
      return var_1
  