Python: 如何用tkinter做出左右兩邊的listbox,中間放箭頭符號,用來新增/移除選擇項目的GUI ?

import tkinter as tk

def add_selected():
    selected_item = database_listbox.get(database_listbox.curselection())
    selected_listbox.insert(tk.END, selected_item)

def remove_selected():
    selected_item = selected_listbox.get(selected_listbox.curselection())
    selected_listbox.delete(selected_listbox.curselection())

# 創建主視窗
window = tk.Tk()

# 創建左邊的 Listbox 顯示 database
database_frame = tk.Frame(window)
database_frame.pack(side=tk.LEFT, padx=10)
database_label = tk.Label(database_frame, text="Database")
database_label.pack()
database_listbox = tk.Listbox(database_frame)
database_listbox.pack()

# 加入假設的資料庫鍵值
database = {
    "key1": "value1",
    "key2": "value2",
    "key3": "value3",
    # ... 其他鍵值
}

for key in database.keys():
    database_listbox.insert(tk.END, key)

# 創建中間的按鈕
button_frame = tk.Frame(window)
button_frame.pack(side=tk.LEFT)
add_button = tk.Button(button_frame, text=">>", command=add_selected)
remove_button = tk.Button(button_frame, text="<<", command=remove_selected)
add_button.pack(pady=10)
remove_button.pack(pady=10)

# 創建右邊的 Listbox 顯示已選擇的項目
selected_frame = tk.Frame(window)
selected_frame.pack(side=tk.LEFT, padx=10)
selected_label = tk.Label(selected_frame, text="已選擇")
selected_label.pack()
selected_listbox = tk.Listbox(selected_frame)
selected_listbox.pack()

# 啟動主視窗的事件迴圈
window.mainloop()

import tkinter as tk

def add_selected():
    selected_index = database_listbox.curselection()
    selected_cable = database_listbox.get(selected_index)
    
    selected_database_text.insert(tk.END, selected_cable + ": ")
    length_entry = tk.Entry(selected_database_text)
    selected_database_text.window_create(tk.END, window=length_entry)
    selected_database_text.insert(tk.END, "\n")
    
    selected_cables[selected_cable] = length_entry

def remove_selected():
    if selected_database_text.tag_ranges("sel"): #tagName="sel"
        selected_text = selected_database_text.get("sel.first", "sel.last")
        selected_database_text.delete("sel.first", "sel.last")
        for cable in selected_cables: #selected_cables: dict
            if selected_cables[cable].get() == selected_text:
            #用in取代==比較好
                del selected_cables[cable]
                break
window = tk.Tk()

database_frame = tk.Frame(window)
database_frame.pack(side=tk.LEFT, padx=10)

database_label = tk.Label(database_frame, text="Database")
database_label.grid(row=0, column=0)

database_listbox = tk.Listbox(database_frame)
database_listbox.grid(row=1, column=0)

cable = {"UFA125A": [13.95, 0.4], "UED240E": [8.09, 0.76]}
for key in cable:
    database_listbox.insert(tk.END, key)

database_scrollbar = tk.Scrollbar(database_frame)
database_scrollbar.grid(row=1, column=1, sticky=tk.N+tk.S)

database_listbox.config(yscrollcommand=database_scrollbar.set)
database_scrollbar.config(command=database_listbox.yview)

button_frame = tk.Frame(window)
button_frame.pack(side=tk.LEFT)

add_button = tk.Button(button_frame, text=">>", command=add_selected)
add_button.pack(pady=10)

remove_button = tk.Button(button_frame, text="<<", command=remove_selected)
remove_button.pack(pady=10)

selected_database_frame = tk.Frame(window)
selected_database_frame.pack(side=tk.LEFT, padx=10)

selected_database_text = tk.Text(selected_database_frame, 
                                 width=30,height=15)
selected_database_text.pack(side=tk.LEFT, fill=tk.Y)

selected_scrollbar = tk.Scrollbar(selected_database_frame, orient=tk.VERTICAL, 
                                  command=selected_database_text.yview)
selected_scrollbar.pack(side=tk.RIGHT, fill=tk.Y)

selected_database_text.config(yscrollcommand=
                              selected_scrollbar.set)

selected_cables = {}
# {"UFA125A": {(13.95, 0.4):[1,2,3,4]} }
# 同一條線會有一樣的K1,K2 (13.95, 0.4) 
# https://www.carlisleit.com/micro-coax-insertion-loss-calculator/
# 但有四種不同的長度[1,2,3,4]
window.mainloop()