Question

我有一个python代码。我在Windows 10上尝试使用python 2.x中的Tkinter 有一个500 x 500的窗户然后有一个延伸线程的Food类。线程。
Food的任务是在画布上创建20000个椭圆形还有一个Ship类，其任务是在画布上绘制并移动一个蓝色矩形。船级不扩展任何类但有一个问题。当我运行程序时，Food开始在画布上创建食物。但是当我移动我的船时，在一些运动程序发出错误并且食物停止产生椭圆形，但是船继续移动有什么问题？
错误是：

Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Python27\lib\threading.py", line 801, in __bootstrap_inner
    self.run()
  File "C:\Users\PC\EclipseWorkspace\PyTests\main.py", line 37, in run
    self.random_oval()
  File "C:\Users\PC\EclipseWorkspace\PyTests\main.py", line 30, in random_oval
    self.oval = self.canvas.create_oval(x-5,y-5,x+5,y+5)
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 2320, in create_oval
    return self._create('oval', args, kw)
  File "C:\Python27\lib\lib-tk\Tkinter.py", line 2305, in _create
    *(args + self._options(cnf, kw))))
ValueError: invalid literal for int() with base 10: 'expected boolean value but got "??"'

以下是代码：

from Tkinter import *
from Queue import Queue
import threading as th
import time
import random

wnd = Tk()
wnd.geometry("500x500+100+100")

canvas = Canvas(wnd, bg="yellow")
canvas.pack(expand=YES, fill=BOTH)

class Food(th.Thread):
    def __init__(self, canvas,food_count):
        canvas.update()
        self.width, self.height = canvas.winfo_width(), canvas.winfo_height()
        self.food_count = food_count
        self.canvas = canvas
        self.points = []
        self.random_oval()

        th.Thread.__init__(self)
        self.start()

    def random_oval(self):
        while True:
            x = random.randrange(0,self.width)
            y = random.randrange(0,self.height)
            if (x,y) not in self.points : break    
        self.oval = self.canvas.create_oval(x-5,y-5,x+5,y+5)
        self.points.append((x,y))


    def run(self):
        count = 0
        while count != self.food_count:
            self.random_oval()
            count += 1
            time.sleep(0.001)

class Ship:
    def __init__(self,x,y, canvas):
        self.x, self.y = x,y
        self.canvas = canvas

        self.ship = self.canvas.create_rectangle(self.x, self.y,self.x+10,self.y+10,fill="blue")

    def move(self,event):
        direction = event.keysym.lower()
        if direction not in ["left", "right", "up", "down"] : return None
        if direction == "right" : self.x += 10
        elif direction == "left" : self.x -= 10
        elif direction == "up" : self.y -= 10
        else : self.y += 10
        self.ship = self.canvas.create_rectangle(self.x, self.y,self.x+10,self.y+10,fill="blue")

Food(canvas, 20000)
ship = Ship(50,50,canvas)
wnd.bind("<Key>",lambda e: ship.move(e))
wnd.mainloop()

python 2.x中的Tkinter线程存在一些问题

0 个答案: