comefrom: <qiyuangong>876_Middle_of_the_Linked_List_1.py
code: def middleNode( head):
      res = []
      while head:
          res.append(head)
          head = head.next
      return res[len(res) / 2]
masked: def sample_funcname ( var_0 ) :
      var_1 = [ ]
      while var_0 :
          var_1.append ( var_0 )
          var_0 = var_0.next
      return var_1 [ len ( var_1 ) / 2 ]
  