我试图创建一个简单的tkinter应用程序，复制2个文件夹中的一个，每个文件夹都分配给不同的单选按钮，到一个新创建的路径，用户选择名称，然后从列表框中加入预定义的路径。创建和复制工作正常，当我选择单选按钮2号时，它仍然使用与单选按钮1关联的源路径。我不确定哪里出错了，希望得到任何帮助，代码可以在下面找到。
'

import os
import tkinter as tk
import shutil

# Create the main window
root = tk.Tk()

canvas1 = tk.Canvas(root, width=400, height=300)
canvas1.pack()

# Create an entry box for a new folder name
entry1 = tk.Entry(root)
canvas1.create_window(200, 140, window=entry1)

# Create a StringVar to hold the value of the selected radio button
selected_src = tk.StringVar()

# Create a listbox to hold the destination path
dest_listbox = tk.Listbox(root)

dest_listbox.insert(tk.END, 'C:/Users/UXL8400/Destination1')
dest_listbox.insert(tk.END, 'C:/Users/UXL8400/Destination2')
dest_listbox.insert(tk.END, 'C:/Users/UXL8400/Destination3')

# Create two radio buttons
rb1 = tk.Radiobutton(root, text='Option 1', variable=selected_src, value='C:/Users/UXL8400/Testing/manaburn')
rb2 = tk.Radiobutton(root, text='Option 2', variable=selected_src, value='C:/Users/UXL8400/Testing/mana')

# Create a function to be called when the button is clicked
def copy_folder():
    # Get the selected source and destination paths
    entrystring = entry1.get()
    src = selected_src.get()
    dest = dest_listbox.get(tk.ACTIVE)
    path = os.path.join(dest, entrystring)
    # Use shutil to copy the folder from the source to the destination
    shutil.copytree(src, path)

# Create a button to trigger the copy operation
copy_button = tk.Button(root, text='Copy Folder', command=copy_folder)

# Pack the widgets
rb1.pack()
rb2.pack()
dest_listbox.pack()
copy_button.pack()

# Run the main loop
root.mainloop()

'
已尝试在单选按钮上使用锚方法，但仍出现ypeError：StringVar.get（）接受1个位置参数，但给出了2个