Checking a function whether it is working or not

I write a code for tic tac toe game. In this code, I have a loop and I insert a function into this loop called WinandTie() which controls the winning and draw situation. If even one condition of WinandTie() is met, i want to stop to loop. I know how to stop the loop (break) but i dont know how to control the winning and draw situations by using the WinandTie() function. How can i fix it?

Here is the code:

for i in range(counter):
while True:
    if playeronecoordination == "1,1":
        listone[1] = " " + playeronesign
        
        if WinandTie():
            break
        else:
            field()
            playertwocoordination = str(input("player two, give the coordinates"))
            break

if WinandTie() part is operable, it turns a response in a different python file with the same required parameters. However, does not turn a response and break the loop in this situation.