import tkinter

from tkinter import ttk  # 导入内部包

li = ['王记', '', '男']

root = tkinter.Tk()

root.title('测试')

tree = ttk.Treeview(root, columns=['', '', ''], show='headings')

tree.column('', width=100, anchor='center')

tree.column('', width=100, anchor='center')

tree.column('', width=100, anchor='center')

tree.heading('', text='姓名')

tree.heading('', text='学号')

tree.heading('', text='性别')

tree.insert('', 'end', values=li)

tree.grid()

def delButton(tree):

    x = tree.get_children()

    for item in x:

        tree.delete(item)

delButton(tree)

root.mainloop()