Python - Tkinter not support MacOS Mojave Dark Mode

问题

I have a problem with the support of Dark Mode on MacOS in python Tkinter. I used python 3.6 with ActiveTlc 8.5 and the Dark Mode works fine, the window titlebar was dark, it's fine for me... but there were some problems with the <MouseWheel> support, then I upgraded python to 3.7.1 and the version of tlc is updated to 8.6.

But now the Dark Mode didn't work, and it's strange, why this is happening?

This is an example code:

from tkinter import *

if __name__ == '__main__':
    root = Tk()
    hero_text = Label(root, fg='white', bg='black', text='HERO TEXT')
    hero_text.grid(row=0, sticky=N+W)
    print(root.tk.exprstring('$tcl_library'))
    print(root.tk.exprstring('$tk_library'))
    root.mainloop()

来源：https://stackoverflow.com/questions/52929744/python-tkinter-not-support-macos-mojave-dark-mode