如何在Python中将tkinter.treeview()数据导出为json文件

import json
from tkinter import ttk

tree = ttk.Treeview(root)  # 创建treeview对象
tree['columns'] = ('name', 'age')  # 设置表格列名
tree.heading('#0', text='ID')  # 设置表格首列标题

# 添加数据到表格中
tree.insert(parent='', index='end', text='1', values=('John Doe', '25'))
tree.insert(parent='', index='end', text='2', values=('Jane Smith', '30'))
tree.pack()

def export_to_json():
    data = []
    for item in tree.get_children():
        values = tree.item(item, 'values')
        data.append({'name': values[0], 'age': values[1]})
    
    with open('data.json', 'w') as f:
        json.dump(data, f)

export_button = ttk.Button(root, text='Export', command=export_to_json)
export_button.pack()