Python Tkinter Tic Tac Toe With lambda
The only purpose of a lambda is brevity. This code:
board = [[Button(root, text = "-", font = myFont, command = (lambda x=x, y=y: update(x,y))) for y in range(3)] for x in range(3)]is the same as this code:
board = []for x in range(3): row = [] for y in range(3): def fn(x=x, y=y): update(x, y) row.append(Button(root, text = "-", font = myFont, command = fn) board.append(row)Obviously the first form is briefer -- the lambda is useful because it allows you to define a function as part of a single expression, rather than having to write out a def block. fn in the second form is exactly equivalent to lambda x=x, y=y: update(x, y) in the first form.