python3-TK实现一个可视化界面，选中文件夹可以计算文件夹下文件的数量

import tkinter as tk
from tkinter import filedialog

def count_files_in_folder(folder_path):
    file_count = 0
    for root, dirs, files in os.walk(folder_path):
        file_count += len(files)
    return file_count

def select_folder():
    folder_path = filedialog.askdirectory()
    if folder_path:
        result = 0
        file_count = count_files_in_folder(folder_path)
        result_label.config(text=f"文件夹 '{folder_path}' 包含 {file_count} 个文件。")
        print(f"文件夹 '{folder_path}' 包含 {file_count} 个文件。")
        result += file_count
        print('目前选中文件夹下文件的数量为:', result)

# 创建GUI界面
root = tk.Tk()
root.title("文件计数器")

# 添加"选择文件夹"按钮
select_folder_button = tk.Button(root, text="选择文件夹", command=select_folder)
select_folder_button.pack(pady=20)

# 添加"结果"标签
result_label = tk.Label(root, text="")

result_label.pack(pady=20)

# 运行GUI界面
root.mainloop()