import turtle
import os
from socket import *
import threading
import time
wn = turtle.Screen()
wn.title("Pong by notnormal")
wn.bgcolor("black")
wn.setup(width=800height=600)
wn.tracer(0)

h = ''

# Paddle A
paddle_a = turtle.Turtle()
paddle_a.speed(0)
paddle_a.shape("square")
paddle_a.color("white")
paddle_a.shapesize(stretch_wid=5stretch_len=1)
paddle_a.penup()
paddle_a.goto(-350,0)

# Paddle B
paddle_b = turtle.Turtle()
paddle_b.speed(0)
paddle_b.shape("square")
paddle_b.color("white")
paddle_b.shapesize(stretch_wid=5stretch_len=1)
paddle_b.penup()
paddle_b.goto(350,0)

# Ball
ball = turtle.Turtle()
ball.speed(0)
ball.shape("square")
ball.color("white")
ball.penup()
ball.goto(0,0)
ball.dx = 0.35
ball.dy = -0.35

# Score
score_a = 0
score_b = 0

# Pen
pen = turtle.Turtle()
pen.speed(0)
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0,260)
pen.write("player A: {} PlayerB: {}".format(score_a, score_b), align="center"font=("Courier"24"normal"))

port = 8081

clientSock = socket(AF_INET, SOCK_STREAM)
clientSock.connect(('127.0.0.1', port))

print('접속 완료')

#Function
def paddle_a_up():
    y = paddle_a.ycor()
    y += 50
    paddle_a.sety(y)

def paddle_a_down():
    y = paddle_a.ycor()
    y -= 50
    paddle_a.sety(y)

def paddle_b_up():
    y = paddle_b.ycor()
    y += 50
    paddle_b.sety(y)

def paddle_b_down():
    y = paddle_b.ycor()
    y -= 50
    paddle_b.sety(y)

# Keyboard binding
wn.listen()
wn.onkeypress(paddle_a_up, "w")
wn.onkeypress(paddle_a_down, "s")
wn.onkeypress(paddle_b_up, "Up")
wn.onkeypress(paddle_b_down, "Down")


#socket
def send(sock):
    while True:
        sendData = input()
        sock.send(sendData.encode('utf-8'))

def receive(sock):
    while True:
        recvData = sock.recv(1024)
        global h
        h = recvData.decode('utf-8')
        print(h)
        if h == 'w':
            paddle_a_up()
        h = ''

def receive1(sock):
    while True:
        recvData = sock.recv(1024)
        global h
        h = recvData.decode('utf-8')
        print(h)
        if h == 's':
            paddle_a_down()
        h = ''

sender = threading.Thread(target=send, args=(clientSock,))
receiver = threading.Thread(target=receive, args=(clientSock,))
receive1r = threading.Thread(target=receive1, args=(clientSock,))

sender.start()
receiver.start()
receive1r.start()


# Main game loop

while True:
    wn.update()

    # Move the ball
    ball.setx(ball.xcor() + ball.dx)
    ball.sety(ball.ycor() + ball.dy)

    # Border checking
    if ball.ycor() > 290:
        ball.sety(290)
        ball.dy *= -1

    if ball.ycor() < -290:
        ball.sety(-290)
        ball.dy *= -1

    if ball.xcor() > 390:
        ball.goto(00)
        ball.dx *= -1
        score_a += 1
        pen.clear()
        pen.write("player A: {} PlayerB: {}".format(score_a, score_b), align="center"font=("Courier"24"normal"))
    
    if ball.xcor() < -390:
        ball.goto(00)
        ball.dx *= -1
        score_b += 1
        pen.clear()
        pen.write("player A: {} PlayerB: {}".format(score_a, score_b), align="center"font=("Courier"24"normal"))

    # Paddle and ball collisions
    if (ball.xcor() > 340 and ball.xcor() < 350and (ball.ycor() < paddle_b.ycor()+40 and ball.ycor() > paddle_b.ycor() - 40):
        ball.setx(340)
        ball.dx *= -1

    if (ball.xcor() < -340 and ball.xcor() > -350and (ball.ycor() < paddle_a.ycor()+40 and ball.ycor() > paddle_a.ycor() - 40):
        ball.setx(-340)
        ball.dx *= -1
    pass


밑은 에러 전문

Exception in thread Thread-2:

Traceback (most recent call last):

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\threading.py", line 932, in _bootstrap_inner

    self.run()

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\threading.py", line 870, in run

    self._target(*self._args, **self._kwargs)

  File "ppc.py", line 104, in receive

    paddle_a_up()

  File "ppc.py", line 66, in paddle_a_up

    paddle_a.sety(y)

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\turtle.py", line 1826,

in sety

    self._goto(Vec2D(self._position[0], y))

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\turtle.py", line 3158,

in _goto

    screen._pointlist(self.currentLineItem),

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\turtle.py", line 755, in _pointlist

    cl = self.cv.coords(item)

  File "<string>", line 1, in coords

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 2761, in coords

    self.tk.call((self._w, 'coords') + args))]

RuntimeError: main thread is not in main loop

Traceback (most recent call last):

  File "ppc.py", line 132, in <module>

    ball.setx(ball.xcor() + ball.dx)

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\turtle.py", line 1808,

in setx

    self._goto(Vec2D(x, self._position[1]))

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\turtle.py", line 3158,

in _goto

    screen._pointlist(self.currentLineItem),

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\turtle.py", line 755, in _pointlist

    cl = self.cv.coords(item)

  File "<string>", line 1, in coords

  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 2761, in coords

    self.tk.call((self._w, 'coords') + args))]

_tkinter.TclError: invalid command name ".!canvas"