我有一個簡單的 Python (3.5) 數據列表，我用它填充了一個列表框。當我從列表框中讀回選定的元素時，雖然我可以使輸出看起來像一個 Python 列表，但它的行為并不像列表，而且我無法處理列表中的元素。該列表似乎顯示為一串字符。問題很簡單，如何在列表框中保存列表（在我的情況下為整數）并將所選元素讀回作為所選元素的新可行列表。這是該問題的工作演示：import tkinter as tkfrom tkinter import *root = tk.Tk()global listboxglobal indatalistindatalist = [[0, 66, 42], [553, 68, 124], [1106, 64, 3], [3321, 78, 8], [3878, 112, 102]]listbox = tk.Listbox(root,font = 'TkFixedFont',selectmode=EXTENDED)def Set():  # Populate the listbox:    global listbox    global indatalist    print('indatalist[1][1]=',indatalist[1][1]) # Nicely prints a 2 dim list    listbox.delete(0,'end')  # Clear the listbox    # Populate the listbox    for index, inlist in enumerate(indatalist):        listbox.insert(len(indatalist),(indatalist[index][0],indatalist[index][1],indatalist[index][2]))    listbox.pack()def Get():  # Read back the listbox    global listbox    selecteddata = listbox.selection_get()##    print(selecteddata)    selecteddata = '[[' + (selecteddata.replace(' ',', ').replace('\n','], [') + ']]')    """Next option is OK, but can only select one single block"""##    startindex = min(listbox.curselection())##    endindex = max(listbox.curselection())##    selecteddata = listbox.get(startindex,endindex)    """Next looks like a list of items, but acts as a list of chars"""    print('selecteddata=',selecteddata)    print('selecteddata[1][1]=')    print(selecteddata[1][1]) # Error!. Can not read 2 dim liststepbutton = tk.Button(root, text = "Set List", command = Set)stepbutton.pack()readbutton = tk.Button(root, text = "Get List", command = Get)readbutton.pack()root.mainloop()