tkinter--Treeview数据更新时删除原来的数据，只显示最新的数据

　　　　 self.tree = ttk.Treeview(self.rightTopFrame) #self.rightTopFrame是treeview的父容器canvas
        style = ttk.Style()
        MON_FONTSIZE = 14
        style.configure('Treeview.Heading', font=(None, MON_FONTSIZE),
                        rowheight=int(MON_FONTSIZE * 5.2))
        style.configure('Treeview', font=(None, MON_FONTSIZE),
                        rowheight=int(MON_FONTSIZE * 5.2))
        self.tree["columns"] = ("姓名", '血量')
        self.tree.heading("姓名", text="姓名")  # 显示表头
        self.tree.heading("血量", text="血量")
        self.tree.column("姓名", width=100, anchor="center")
        self.tree.column("血量", width=800, anchor="center")

        self.tree.tag_configure("mine", foreground="red")
        self.tree.tag_configure("others", foreground="blue")
        self.tree.tag_configure("finish", foreground="green")

        self.tree.place(relx=0.004, rely=0.028, relwidth=0.964, relheight=0.95)

        """
            定义滚动条控件
            orient为滚动条的方向，vertical--纵向，horizontal--横向
            command=self.tree.yview 将滚动条绑定到treeview控件的Y轴
        """
        self.VScroll1 = Scrollbar(self.rightTopFrame, orient='vertical', command=self.tree.yview)
        self.VScroll1.place(relx=0.971, rely=0.028, relwidth=0.024, relheight=0.958)
        # 给treeview添加配置
        self.tree.configure(yscrollcommand=self.VScroll1.set)

写入数据：写入之前删除节点即可实现写入的数据永远是最新的。（错误思路：用JS的思维来做，数据改变即新数据产生的时候就去判断treeview是否有节点，有才执行删除，否则不删除）

 # 删除原节点
        for _ in map(self.tree.delete, self.tree.get_children("")):
            pass
        index = 0
        for item in self.getAttackLog():  # 写入数据
            if item.get("type") == 'enemy':
                self.tree.insert('', index, values=(item.get("type"), item.get("msg")),
                                 tags="others")
            elif item.get("type") == 'finish':
                self.tree.insert('', index, values=(item.get("type"), item.get("msg")),
                                 tags="finish")
            else:
                self.tree.insert('', index, values=(item.get("type"), item.get("msg")),
                                 tags="mine")
            index += 1
        self.tree.pack(side=tkinter.LEFT, padx=5, pady=20)