Problem with the printer function

[scratchmyhead]

I'm trying to print data to the printer but get an error code: TypeError: to_printer() missing 1 required positional argument: 'text'
The code is below:

from tkinter import *
import tkinter as tk

root = Tk()
root.state('zoomed')
root.title('Hotel King Ver 1.8')


def to_printer(text):
    import subprocess
    lpr =  subprocess.Popen("/usr/bin/lpr", stdin=subprocess.PIPE)
    lpr.stdin.write(text)


print_button = tk.Button(root, text="print", command=to_printer)
print_button.pack()




root.mainloop()