在tkinter文本中查找关键字

import tkinter as tk
import re

def find_keyword():
    keyword = entry.get()  # 获取用户输入的关键字
    text_content = text.get("1.0", "end-1c")  # 获取文本内容

    # 使用正则表达式在文本中查找关键字
    matches = re.finditer(r"\b{}\b".format(re.escape(keyword)), text_content)

    # 遍历匹配结果并进行相应操作
    for match in matches:
        start = match.start()
        end = match.end()
        text.tag_add("highlight", "1.0+{}c".format(start), "1.0+{}c".format(end))

    if len(matches) == 0:
        messagebox.showinfo("提示", "没有找到关键字。")

root = tk.Tk()
root.title("查找关键字")

frame = tk.Frame(root)
frame.pack(pady=10)

label = tk.Label(frame, text="关键字：")
label.pack(side="left")

entry = tk.Entry(frame)
entry.pack(side="left")

button = tk.Button(frame, text="查找", command=find_keyword)
button.pack(side="left")

text = tk.Text(root)
text.pack()

# 创建用于高亮显示的标签
text.tag_configure("highlight", background="yellow")

root.mainloop()