Python Zelle 图形和 While 循环

Question

我正在尝试创建不重叠的矩形抽认卡并将它们放置在 Zelle Graphics 中的随机位置。xMin 和 yMin 是矩形左上角的坐标，xMax 和 yMax 是矩形右下角的坐标。我尝试生成随机 (xCenter,yCenter) 坐标来创建一个新矩形，并检查新矩形是否与任何现有矩形重叠。如果重叠，则生成新的随机点，直到不再重叠为止。我得到了检查重叠的功能，但后来我在 while 循环中遇到了问题。我是 Python 的初学者，因此非常感谢您的帮助！from graphics import *from random import randrange *def checkLocation(xMin,xMax,yMin,yMax,xMinList,xMaxList,yMinList,yMaxList):    for x in range (xMin,xMax):        for y in range (yMin,yMax):            for i in range(len(xMinList)):                if xMinList[i] < x < xMaxList[i] and yMinList[i] < y < yMaxList[i]:                    return False     #if the new rectangle isn't overlapping, append its 4 corner into the list for future comparison:                    xMinList.append(xMin)    xMaxList.append(xMax)    yMinList.append(yMin)    yMaxList.append(yMax)    return xMinList,xMaxList,yMinList,yMaxListdef main():    win = GraphWin("Flash Card", 800,800)    xCenter, yCenter = randrange (200,600), randrange (200,600) #display the words from the text in randomly generated locations                       xMin = xCenter - 50    xMax = xCenter + 50    yMin = yCenter - 50    yMax = yCenter + 50    xMinList = [300,500,200,100,600] #I hard coded these 4 lists for the purpose of testing    xMaxList = [350,580,220,140,650]    yMinList = [100,500,300,600,400]    yMaxList = [160,540,325,680,450]    #while checkLocation is False (location overlapping), check again until it's True (not overlapping)    while not checkLocation(xMin,xMax,yMin,yMax,xMinList,xMaxList,yMinList,yMaxList):        checkLocation(xMin,xMax,yMin,yMax,xMinList,xMaxList,yMinList,yMaxList)    xMinList, xMaxList,yMinList,yMaxList =  checkLocation(xMin,xMax,yMin,yMax,xMinList,xMaxList,yMinList,yMaxList)    rect = Rectangle (Point(xMin,yMin),Point(xMax,yMax))    rect.draw(win)主要的（）