Valaki segítene? Az alábbi scriptben hibás a következő sor: abl1. after (50, move_ball) A nyelv Python.

from Tkinter import *

from random import randrange

def move_ball():

global flag, x, y, moving

if moving == True:

move_ball_right_down()

if moving == False:

move_ball_left_up()

if x <= 20 or y <= 20:

moving = True

if x >= 480 or y >= 480:

moving = False

if flag >0:

abl1.after(50, move_ball)

def move_ball_right_down():

global x, y

x, y = randrange(0, 400), randrange(0, 400)

can.coords(ball, x-r, y-r, x+r, y+r)

def move_ball_left_up():

global x, y

x, y = randrange(400, 0), randrange(400, 0)

can.coords(ball, x-r, y-r, x+r, y+r)

def click_ball(event):

global x, y, points, ball, r, flag

if flag == 1 and ((event.x-x)**2 + (event.y-y)**2) <= r**2:

points = points + 1

lab2.configure(text = "Points: " + str(points))

r = r - 1

can.coords(ball, x-r, y-r, x+r, y+r)

pal = ["red", "green", "white", "blue", "black", "yellow", "magenta"]

m = randrange(7)

color = pal[m]

can.itemconfig(ball, fill = color)

if points == 15:

lab2.configure(text = "Points: " + str(points) + " - You won!", fg = "green")

flag = 0

def start():

global flag

if flag == 0 and points < 15:

flag = 1

move_ball()

def pause():

global flag

flag = 0

def restart():

global points, r, x, y, flag, dx

x, y = 250, 250

r = 20

points = 0

moving = True

can.coords(ball, x-r, y-r, x+r, y+r)

can.itemconfig(ball, fill = "red")

lab2.configure(text = "Points: " + str(points))

if flag == 0:

flag = 1

move_ball()

x, y = 250, 250

r = 20

flag = 0

moving = True

points = 0

abl1 = Tk()

abl1.title("Clicky game")

can = Canvas(abl1, height = 500, width = 500, bg = "light grey")

can.grid(row = 3, column = 1, columnspan = 3, sticky = N)

can.bind("<Button-1>", click_ball)

lab = Label(abl1, text = "Click on the 'Start' button, then catch the ball!")

lab.grid(row = 1, column = 2, sticky = N, pady = 2)

lab2 = Label(abl1, text = "Points: 0", fg = "red")

lab2.grid(row = 2, column = 2, sticky = N, pady = 2)

ball = can.create_oval(x-r, y-r, x+r, y+r, fill = "red")

but1 = Button(abl1, text = "Quit", command = abl1.destroy)

but1.grid(row = 4, column = 3, sticky = E, padx = 5, pady = 5)

but2 = Button(abl1, text = "Start", command = start)

but2.grid(row = 4, column = 1, sticky = W, padx = 10, pady = 5)

but3 = Button(abl1, text = "Pause", command = pause)

but3.grid(row = 4, column = 1, sticky = E, padx = 10, pady = 5)

but4 = Button(abl1, text = "Restart", command = restart)

but4.grid(row = 4, column = 2, sticky = W, padx = 10, pady = 5)

abl1.mainloop()