Python: copying from clipboard using tkinter without displaying window

This works fine except a blank tkinter window pops up every time this executes.

You can hide this window:

from tkinter import Tk
root = Tk()
root.withdraw()
number = root.clipboard_get()

Window is created by tkinter.Tk() (or other elements which need window) not by tk().mainloop(). Mainloop keeps program working.

Maybe try Pyperclip or clipboard