Tkinter标签不会更新

Question

任何人都可以了解为什么这不会更新label3？

self.label3Text = StringVar()
self.label3Text.set("0/0")
self.label3 = Label(textvariable=self.label3Text)
self.label3.pack()

---

for root,dirs,filenames in os.walk(self.path):
    #iterate through the files
    num_files = len(filenames)
    i = 0
    for f in filenames:
        #if the file is a text file
        if ".txt" in f:
            #define the path of this new file as the datalog folder plus the filename
            file_path = os.path.join(self.path,f)
            #write the correct data to the csv file for this file
            self.addRows(f,file_path)
            i = i + 1
            out = str(i) + "/" + str(num_files) + " files processed"
            self.label3Text.set(out)

Answer 1

好的 - 所以答案是我需要更新我的根窗口！通过调用window.update（），我解决了这个问题。窗口声明为：window = Tk（）

只需添加此内容，以防其他人偶然发现此问题。