I have a script that makes a backup copy of the folders I need. I made a GUI for it using tkinter. The whole script and its GUI worked fine and without any complaints even with large files of 2Giga or more.

I decided to add ttk.Progressbar so that the script's process itself could be seen (purely for natural reasons).

Here is the progressbar itself and its appearance when after calling it there is no further function. In this case, everything works, but the script is no longer executed:

def progress_bar (self):
        try:
            self.frame7.destroy ()
            if self.frame7.winfo_exists ()== 0:
                self.progress= ttk.Progressbar (self.frame8, orient= HORIZONTAL,
                    length= 300, mode= 'indeterminate')
                self.progress.grid (columnspan= 20, padx= 40)
                self.progress.start ()
        except Exception as e:
            print (str (e))

But if, after starting the progress bar itself, add a script execution function to archive data, then frame7 does not disappear but hangs and ttk.Progressbar does not appear.

def progress_bar (self):
        try:
            self.frame7.destroy ()
            if self.frame7.winfo_exists ()== 0:
                self.progress= ttk.Progressbar (self.frame8, orient= HORIZONTAL,
                    length= 300, mode= 'indeterminate')
                self.progress.grid (columnspan= 20, padx= 40)
                self.progress.start ()
                self.entering_of_changes ()
        except Exception as e:
            print (str (e))
    def entering_of_changes (self):
        comment2= self.comments
        if os.path.exists (self.remarks):
            self.remark= open (homedir + os.sep + remarkfile, 'a')
            x= homedir + os.sep + remarkfile
            self.remark.write (
                time.strftime ('% d% m% Y') +
                "-" + time.strftime ('% H% M% S') + "-" + comment2 + "\ n"
                )
            self.source.append (x)
            self.remark.close ()
            self.archive ()
        else:
            self.remark= open (homedir + os.sep + remarkfile, 'a')
            x= homedir + os.sep + remarkfile
            self.remark.write (
                time.strftime ('% d% m% Y') +
                "-" + time.strftime ('% H% M% S') + "-" + comment2 + "\ n"
                )
            self.source.append (x)
            self.remark.close ()
            self.archive ()

After the script is executed to the end, self.frame7 disappears and a message about the successful execution of the script is displayed. I suppose that the program just hangs during execution and because of this the widget I need does not disappear. Tell me what could be the problem?