How to make button text bold in Tkinter?

[scratchmyhead]

I've googled this but can't find an answer. I just want to make the text on a button bold.

[menator01]

1 2 3 4 5 6 7

import tkinter as tk   root = tk.Tk()   button = tk.Button(None, text='Button', font='sans 16 bold').pack()   root.mainloop()

[scratchmyhead]

Thank you