如何将用户输入放入文本小部件中，并使用Python通过tkinter在日志文件中进行搜索

import tkinter as tk
from tkinter import scrolledtext
import re

window = tk.Tk()
window.title("日志搜索")
window.geometry("400x300")

# 创建文本框
text_box = scrolledtext.ScrolledText(window, height=10)
text_box.pack()

# 创建搜索按钮
search_button = tk.Button(window, text="搜索", command=search_logs)
search_button.pack()

# 创建滚动文本框用于显示搜索结果
result_box = scrolledtext.ScrolledText(window, height=10)
result_box.pack()

window.mainloop()

def search_logs():
    keyword = text_box.get("1.0", tk.END).strip()  # 获取文本框中的关键字
    if keyword:
        try:
            # 打开日志文件并逐行搜索
            with open("logfile.txt", "r") as file:
                lines = file.readlines()
                matches = [line for line in lines if re.search(keyword, line, re.IGNORECASE)]
                
            # 显示搜索结果
            result_box.delete("1.0", tk.END)  # 清空结果框
            if matches:
                for match in matches:
                    result_box.insert(tk.END, match)
            else:
                result_box.insert(tk.END, "未找到匹配的日志行。")
        except FileNotFoundError:
            result_box.insert(tk.END, "日志文件不存在。")
    else:
        result_box.insert(tk.END, "请输入关键字进行搜索。")