Button Command in tkinter PYTHON

Question

I successed to make tic-tac-toe in python so I tried making tic-tac-toe in tkinter.

Then I made nine buttons and tried using command to them. But there were some errors.

So I started to test parameter, ‘command’.

The codes were like this(test):

——————————————————————
from tkinter import *

def click():
btn.configure(text = ‘O’)

window = Tk()

btn = Button(window, command = click)

window.mainloop()
——————————————————————

It worked well;;

But this codes got errors:

——————————————————————
from tkinter import *

def click(a):
if a == 1:
btn.configure(text = ‘O’)
elif a == 2:
btn.configure(text = ‘X’)

window = Tk()

btn = Button(window, command = click(1))

window.mainloop()
——————————————————————

So, why are there some errors?
Please let me know the reason.

Answer 1

use "lambda: click(1)"

Answer 2

click(1) is not a function, it is what click return with 1 as its parameter
If you want to know which turn it is, you will have to store a as a global variable for example