【发布时间】：2021-07-17 10:28:07
【问题描述】：
我正在编写一个自定义游戏来学习 python。当我运行游戏并测试错误时，没有崩溃，但关闭窗口后，有时会出现此错误
TclError: invalid command name ".!canvas"
有时不会，如果出现此错误代码，我必须重新打开一个新控制台，否则下一次运行将崩溃并自动重新启动控制台。我怎样才能防止这种情况发生？
这是我到目前为止的所有代码：
"""
Created on Thu Jul 8 18:34:52 2021
@author: Rudolf
"""
import turtle
import random
import time
#képernyő
wn = turtle.Screen()
wn.title("asd")
wn.bgcolor("black")
wn.setup(width=800, height=600)
wn.tracer(0,0)
#turtle.register_shape("asd.gif")
#bullet
bullet = turtle.Turtle()
bullet.speed(0)
bullet.color("blue")
bullet.shape("square")
bullet.shapesize(stretch_wid=1,stretch_len=1)
bullet.penup()
bullet.goto(1000,1000)
bullet.dx = 20
#vonal
vonal = turtle.Turtle()
vonal.speed(0)
vonal.color("white")
vonal.shape("square")
vonal.penup()
vonal.shapesize(stretch_wid=40,stretch_len=0.35)
vonal.goto(-3.5,0)
#első player
testone = turtle.Turtle()
testone.speed(0)
testone.color("white")
testone.shape("square")
testone.penup()
testone.shapesize(stretch_wid=3,stretch_len=3)
testone.goto(-200, 0)
#második player
testtwo = turtle.Turtle()
testtwo.speed(0)
testtwo.color("white")
testtwo.shape("square")
testtwo.penup()
testtwo.shapesize(stretch_wid=3,stretch_len=3)
testtwo.goto(200, 0)
#ammo
ammoone = turtle.Turtle()
ammoone.speed(0)
ammoone.color("red")
ammoone.shape("circle")
ammoone.penup()
ammoone.shapesize(stretch_wid=2,stretch_len=2)
ammoone.goto(random.randint(-380,-10),random.randint(-280,280))
#pont
pont = turtle.Turtle()
pont.speed(0)
pont.shape("square")
pont.color("white")
pont.hideturtle()
pont.penup()
pont.goto(0, -260)
pont.write("pont : 0 pont : 0", align="center", font=("Courier", 24, "normal"))
#ammo count
ammo = turtle.Turtle()
ammo.color("white")
ammo.shape("square")
ammo.penup()
ammo.hideturtle()
ammo.goto(0, 260)
ammo.write("Player 1 Ammo : 0 Player 2 Ammo : 0",align = "center", font = ("Courier", 24,"normal"))
a = 0
b = 0
c = 0
d = 0
#1-es player irányitás
def up():
height = 300
move = 80
y = testone.ycor()
if y < height :
if y + move > height - 19:
y = height - 19
testone.sety(y)
else:
y += move
testone.sety(y)
def down():
height = -300
move = 80
y = testone.ycor()
if y > height :
if y - move < height + 29:
y = height + 29
testone.sety(y)
else:
y -= move
testone.sety(y)
def left():
width = -400
move = 80
a = 22
x = testone.xcor()
if x > width :
if x - move < width + a:
x = width + a
testone.setx(x)
else:
x -= move
testone.setx(x)
def right():
width = 0
move = 80
a = 29
x = testone.xcor()
if x < width :
if x + move > width - a:
x = width -a
testone.setx(x)
else:
x += move
testone.setx(x)
def fire():
global a
if bullet.xcor() > 1000 and bullet.ycor() == 1000:
if a > 0:
a -= 1
bullet.goto(testone.xcor(),testone.ycor())
#2-es player irányitás
def uptwo():
height = 300
move = 80
y = testtwo.ycor()
if y < height :
if y + move > height - 19:
y = height - 19
testtwo.sety(y)
else:
y += move
testtwo.sety(y)
def downtwo():
height = -300
move = 80
y = testtwo.ycor()
if y > height :
if y - move < height + 29:
y = height + 29
testtwo.sety(y)
else:
y -= move
testtwo.sety(y)
def lefttwo():
width = 0
move = 80
a = 22
x = testtwo.xcor()
if x > width :
if x - move < width + a:
x = width + a
testtwo.setx(x)
else:
x -= move
testtwo.setx(x)
def righttwo():
width = 400
move = 80
a = 29
x = testtwo.xcor()
if x < width :
if x + move > width - a:
x = width -a
testtwo.setx(x)
else:
x += move
testtwo.setx(x)
wn.listen()
wn.onkeypress(up,"w")
wn.onkeypress(down,"s")
wn.onkeypress(left,"a")
wn.onkeypress(right,"d")
wn.onkeypress(uptwo,"Up")
wn.onkeypress(downtwo,"Down")
wn.onkeypress(lefttwo,"Left")
wn.onkeypress(righttwo,"Right")
run = True
while run:
wn.update()
bullet.setx(bullet.xcor() + bullet.dx)
if ammoone.xcor() + 30 > testone.xcor() - 30 and ammoone.xcor() - 30 < testone.xcor() + 30 and ammoone.ycor() + 30 > testone.ycor() - 30 and ammoone.ycor() - 30 < testone.ycor() + 30:
a += 1
ammoone.goto(random.randint(-380,-10),random.randint(-280,280))
ammo.clear()
ammo.write("Player 1 Ammo : {} Player 2 Ammo : {}".format(a, b),align = "center", font = ("Courier", 24,"normal"))
if bullet.xcor() > 1000 and bullet.ycor() == 1000:
wn.onkeypress(fire,"q")
if testtwo.xcor() + 30 > bullet.xcor() - 30 and testtwo.xcor() - 30 < bullet.xcor() + 30 and testtwo.ycor() + 30 > bullet.ycor() - 30 and testtwo.ycor() - 30 < bullet.ycor() + 30:
c += 1
bullet.goto(1000,1000)
if bullet.xcor() > 400 and bullet.xcor() < 500:
bullet.goto(1000,1000)
ammo.clear()
ammo.write("Player 1 Ammo : {} Player 2 Ammo : {}".format(a, b),align = "center", font = ("Courier", 24,"normal"))
pont.clear()
pont.write("pont : {} pont : {}".format(c, d), align="center", font=("Courier", 24, "normal"))
wn.update()
wn.exitonclick()
【问题讨论】：