Tkinter与ttkbootstrap双窗口组件创建报错求助

我编写了一款Python音频播放器，包含window1和window2两个独立窗口。单独运行window2并启用所有组件时功能正常，但在双窗口流程中会出现以下问题：

• 取消window2中ttk.Meter组件的注释，会触发TypeError: cannot unpack non-iterable NoneType object
• 取消ttk.Scale组件的注释，会触发_tkinter.TclError: can't invoke "tk" command: application has been destroyed
  两个窗口无业务关联。

代码实现 #

import tkinter as tk
import ttkbootstrap as ttk
import tkinterDnD
import sys
import pygame
import multiprocessing as mp


file = None

pygame.mixer.init()

def on_closing():
    sys.exit()

def drop(event):
    global file
    file = event.data
    window1.destroy()

def openFile():
    global file
    file = tk.filedialog.askopenfile(mode='r',title="Pick a file you want to open", filetypes=[("Audio Files",".mp3 .wav")])
    pygame.mixer.music.load(file)
    pygame.mixer.music.play(loops=0)
    window1.destroy()

window1 = tkinterDnD.Tk()
window1.config(bg="#333333")
window1.title("Tmp Audio Player")
window1.geometry(str(round(window1.winfo_screenwidth() / 2)) + "x" + str(round(window1.winfo_screenheight() / 2)) + "+" + str(round(window1.winfo_screenwidth() / 4)) + "+" + str(round(window1.winfo_screenheight() / 4)))
window1.bind('<Escape>', lambda e: sys.exit())

tmp = ttk.Window(themename="custom")
tmp.destroy()

window1.protocol("WM_DELETE_WINDOW", on_closing)

frame = ttk.Frame(master=window1, ondrop=drop, relief="solid")
label = ttk.Label(master=frame, text="Drag and drop a file here or open one")
label.pack(fill="both", expand=True, padx=300, pady=200)
frame.place(relx=0.5, rely=0.5,anchor="center")

openFileButton = ttk.Button(master=window1,command=openFile,text="Open file", bootstyle="outline")
openFileButton.place(relx=0.5, rely=0.73, anchor="center")

window1.mainloop()

window2 = ttk.Window(themename="custom")
window2.title("Tmp Audio Player")
window2.state('zoomed')
window2.bind('<Escape>', lambda e: sys.exit())

#my_meter = ttk.Meter(master=window2)
#my_meter.pack()

#volume = ttk.Scale(master=window2)
#volume.pack()

label2 = ttk.Label(master=window2, text="Drag and drop a file here or open one")
label2.pack()

window2.mainloop()

报错1：启用Meter组件触发TypeError #

Traceback (most recent call last):
  File "c:\Users\Sirius\Desktop\Tmp Audio Player.py", line 54, in <module>
    my_meter = ttk.Meter(master=window2)
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\widgets.py", line 718, in __init__
    self._setup_widget()
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\widgets.py", line 758, in _setup_widget
    self._draw_base_image()
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\widgets.py", line 862, in _draw_base_image
    self._set_widget_colors()
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\widgets.py", line 773, in _set_widget_colors
    self._meterbackground = Colors.update_hsv(background, vd=-0.1)
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\style.py", line 367, in update_hsv
    r, g, b = Colors.hex_to_rgb(color)
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\style.py", line 315, in hex_to_rgb
    r, g, b = colorutils.color_to_rgb(color)
TypeError: cannot unpack non-iterable NoneType object

报错2：启用Scale组件触发TclError #

Traceback (most recent call last):
  File "c:\Users\Sirius\Desktop\Tmp Audio Player.py", line 57, in <module>
    volume = ttk.Scale(master=window2)
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\style.py", line 4960, in __init__
    ttkstyle = Bootstyle.update_ttk_widget_style(
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\style.py", line 5050, in update_ttk_widget_style
    builder_method(builder, widget_color)
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\style.py", line 1710, in create_scale_style
    images = self.create_scale_assets(colorname)
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\style.py", line 1610, in create_scale_assets
    size = self.scale_size(size)
  File "C:\Users\Sirius\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\ttkbootstrap\style.py", line 1116, in scale_size
    winsys = self.style.master.tk.call("tk", "windowingsystem")
_tkinter.TclError: can't invoke "tk" command: application has been destroyed

内容的提问来源于stack exchange，提问作者Siri