Here is my code:
class GUI(playGame):
def __init__(self):
import tkinter as tk
home=tk.Tk()
home.title("Tic Tac Toe")
home.geometry("160x180")
w,h=6,3
self.c1r1=tk.Button(text='',width=w, height=h, command=lambda: userTurn(self.c1r1))
self.c1r1.grid(column=1,row=1)
home.mainloop()
So, userTurn has been defined in the parent class playGame but when I run this and click on the button c1r1, I get NameError: name 'userTurn' is not defined