我試圖在循環(huán)中創(chuàng)建選項菜單，選項菜單的數(shù)量取決于一個變量。所以我試圖在我的代碼中使用 exec 。我使用以下內(nèi)容傳遞 'i' 的值以連接到正在更改值的變量。但是一旦我調(diào)用跟蹤，我在“選項”菜單中選擇的選項就不會在“選項”菜單框中更新。如果我不調(diào)用跟蹤功能，它會在顯示中更新。trackProcessMenu 是回調(diào)函數(shù)。請讓我知道，我在哪里犯了錯誤。添加我的代碼：for i in range(0,numOfLibFiles):            exec('self.processOptionMenuVar_%d = StringVar()'%i)            process_menu = ("ff","ss","tt","fff","sss","ttt")            exec('self.processOptionMenu_%d = OptionMenu(self, self.processOptionMenuVar_%d, *process_menu )'%(i,i))            exec('self.processOptionMenu_%d.config(indicatoron=0,compound=RIGHT,image= self.downArrowImage, anchor = CENTER , direction = RIGHT)'%i)            exec('self.processOptionMenuVar_%d.set("--")'%i)            exec('self.processOptionMenu_%d.grid(row = i, column =1, sticky = N ,padx=30, pady =7 )'%i)def trackProcessMenu(self,*args):        i = args[0]    exec('process = self.processOptionMenuVar_%d.get()'%i)