求助

@秋梵

import turtle
import os

wn =turtle.Screen()
wn.title("Pong by 123")
wn.bgcolor("black")
wn.setup(width=800,height=600)
wn.tracer(0)

# Score
score_a = 0
score_b = 0






#Paddle A
paddle_a = turtle.Turtle()
paddle_a.speed(0)
paddle_a.shape("square")
paddle_a.color("white")
paddle_a.shapesize(stretch_wid=5,stretch_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=5,stretch_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 = 0.1
ball.dy = -0.1

# Pen
pen = turtle.Turtle()
pen.speed(0)
pen.color("white")
pen.penup()
pen.hideturtle()
pen.goto(0,260)
pen.write("Player A:0  Player B:0", align="center",font=("Courier",24,"normal"))



#Function
def paddle_a_up():
    y = paddle_a.ycor()
    y += 20
    paddle_a.sety(y)

def paddle_a_down():
    y = paddle_a.ycor()
    y -= 20
    paddle_a.sety(y)
   
def paddle_b_up():
    y = paddle_b.ycor()
    y += 20
    paddle_b.sety(y)

def paddle_b_down():
    y = paddle_b.ycor()
    y -= 20
    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")

# 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
        os.system("afplay bounce.wav&")

    if ball.ycor()< -290:
        ball.sety(-290)
        ball.dy *= -1
        os.system("afplay bounce.wav&")
    if ball.xcor() > 390:
        ball.goto(0,0)
        ball.dx *= -1
        score_a +=  1
        pen.clear()
        pen.write("Player A:{}  Player B:{}".format (score_a,score_b), align="center",font=("Courier",24,"normal"))

        

    if ball.xcor() < -390:
        ball.goto(0,0)
        ball.dx *= -1
        score_b +=  1
        pen.clear()
        pen.write("Player A:{}  Player B:{}".format (score_a,score_b), align="center",font=("Courier",24,"normal"))

    # Paddle and ball collisions
    if (ball.xcor() > 340 and ball.xcor() < 350) and (ball.ycor() <paddle_b.ycor()+ 40 and ball.ycor()> paddle_b.ycor() -50):
        ball.setx(340)
        ball.dx *= -1
        os.system("afplay bounce,wav&")


   

    if (ball.xcor() < -340 and ball.xcor() > -350) and (ball.ycor() <paddle_a.ycor()+ 40 and ball.ycor()> paddle_a.ycor() -50):
        ball.setx(-340)
        ball.dx *= -1
        os.system("afplay bounce,wav&")



Traceback (most recent call last):
  File "C:/Users/86187/Desktop/01.py", line 90, in <module>
    ball.setx(ball.xcor()+ball.dx)
  File "C:\Users\86187\AppData\Local\Programs\Python\Python37-32\lib\turtle.py", line 1808, in setx
    self._goto(Vec2D(x, self._position[1]))
  File "C:\Users\86187\AppData\Local\Programs\Python\Python37-32\lib\turtle.py", line 3158, in _goto
    screen._pointlist(self.currentLineItem),
  File "C:\Users\86187\AppData\Local\Programs\Python\Python37-32\lib\turtle.py", line 755, in _pointlist
    cl = self.cv.coords(item)
  File "<string>", line 1, in coords
  File "C:\Users\86187\AppData\Local\Programs\Python\Python37-32\lib\tkinter\__init__.py", line 2466, in coords
    self.tk.call((self._w, 'coords') + args))]
_tkinter.TclError: invalid command name ".!canvas"



大佬们，这个是哪里错了，应该怎么改

xiaosi4081

1. 
   
2. import turtle
   
3. import os
   
4. 
   
5. wn =turtle.Screen()
   
6. wn.title("Pong by 123")
   
7. wn.bgcolor("black")
   
8. wn.setup(width=800,height=600)
   
9. wn.tracer(0)
   
10. 
    
11. # Score
    
12. score_a = 0
    
13. score_b = 0
    
14. 
    
15. 
    
16. 
    
17. 
    
18. 
    
19. 
    
20. #Paddle A
    
21. paddle_a = turtle.Turtle()
    
22. paddle_a.speed(0)
    
23. paddle_a.shape("square")
    
24. paddle_a.color("white")
    
25. paddle_a.shapesize(stretch_wid=5,stretch_len=1)
    
26. paddle_a.penup()
    
27. paddle_a.goto(-350,0)
    
28. #Paddle B
    
29. paddle_b= turtle.Turtle()
    
30. paddle_b.speed(0)
    
31. paddle_b.shape("square")
    
32. paddle_b.color("white")
    
33. paddle_b.shapesize(stretch_wid=5,stretch_len=1)
    
34. paddle_b.penup()
    
35. paddle_b.goto(350,0)
    
36. #Ball
    
37. ball = turtle.Turtle()
    
38. ball.speed(0)
    
39. ball.shape("square")
    
40. ball.color("white")
    
41. ball.penup()
    
42. ball.goto(0,0)
    
43. ball.dx = 0.1
    
44. ball.dy = -0.1
    
45. 
    
46. # Pen
    
47. pen = turtle.Turtle()
    
48. pen.speed(0)
    
49. pen.color("white")
    
50. pen.penup()
    
51. pen.hideturtle()
    
52. pen.goto(0,260)
    
53. pen.write("Player A:0  Player B:0", align="center",font=("Courier",24,"normal"))
    
54. 
    
55. 
    
56. 
    
57. #Function
    
58. def paddle_a_up():
    
59.     y = paddle_a.ycor()
    
60.     y += 20
    
61.     paddle_a.sety(y)
    
62. 
    
63. def paddle_a_down():
    
64.     y = paddle_a.ycor()
    
65.     y -= 20
    
66.     paddle_a.sety(y)
    
67.    
    
68. def paddle_b_up():
    
69.     y = paddle_b.ycor()
    
70.     y += 20
    
71.     paddle_b.sety(y)
    
72. 
    
73. def paddle_b_down():
    
74.     y = paddle_b.ycor()
    
75.     y -= 20
    
76.     paddle_b.sety(y)
    
77. 
    
78. 
    
79. # keyboard binding
    
80. wn.listen()
    
81. wn.onkeypress(paddle_a_up,"w")
    
82. wn.onkeypress(paddle_a_down,"s")
    
83. wn.onkeypress(paddle_b_up,"Up")
    
84. wn.onkeypress(paddle_b_down,"Down")
    
85. 
    
86. # Main game loop
    
87. while True:
    
88.     wn.update()
    
89.     try:
    
90. #Move the ball
    
91.         ball.setx(ball.xcor()+ball.dx)
    
92.         ball.sety(ball.ycor()+ball.dy)
    
93. 
    
94.         # Border checking
    
95.         if ball.ycor()> 290:
    
96.             ball.sety(290)
    
97.             ball.dy *= -1
    
98.             os.system("afplay bounce.wav&")
    
99. 
    
100.         if ball.ycor()< -290:
     
101.             ball.sety(-290)
     
102.             ball.dy *= -1
     
103.             os.system("afplay bounce.wav&")
     
104.         if ball.xcor() > 390:
     
105.             ball.goto(0,0)
     
106.             ball.dx *= -1
     
107.             score_a +=  1
     
108.             pen.clear()
     
109.             pen.write("Player A:{}  Player B:{}".format (score_a,score_b), align="center",font=("Courier",24,"normal"))
     
110. 
     
111.             
     
112. 
     
113.         if ball.xcor() < -390:
     
114.             ball.goto(0,0)
     
115.             ball.dx *= -1
     
116.             score_b +=  1
     
117.             pen.clear()
     
118.             pen.write("Player A:{}  Player B:{}".format (score_a,score_b), align="center",font=("Courier",24,"normal"))
     
119. 
     
120.         # Paddle and ball collisions
     
121.         if (ball.xcor() > 340 and ball.xcor() < 350) and (ball.ycor() <paddle_b.ycor()+ 40 and ball.ycor()> paddle_b.ycor() -50):
     
122.             ball.setx(340)
     
123.             ball.dx *= -1
     
124.             os.system("afplay bounce,wav&")
     
125. 
     
126. 
     
127.       
     
128. 
     
129.         if (ball.xcor() < -340 and ball.xcor() > -350) and (ball.ycor() <paddle_a.ycor()+ 40 and ball.ycor()> paddle_a.ycor() -50):
     
130.             ball.setx(-340)
     
131.             ball.dx *= -1
     
132.             os.system("afplay bounce,wav&")
     
133.     except:
     
134.         break
     

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把窗口关了后，找不到窗口，所以会报错