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_2 = 0
      for var_3 in var_0 :
          var_2 ^= var_3
      return var_2
  