comefrom: <qiyuangong>089_Gray_Code_2.py
code: def count_one( num):
      count = 0
      while num:
          num &= (num - 1)
          count += 1
      return count
masked: def sample_funcname ( var_0 ) :
      var_2 = 0
      while var_0 :
          var_0 &= ( var_0 - 1 )
          var_2 += 1
      return var_2
  