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):
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from tkinter import *
def click():
btn.configure(text = ‘O’)
window = Tk()
btn = Button(window, command = click)
window.mainloop()
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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