self._entry         self._button = tk.Button(self, text="Browse...",bg="red",fg="white", command=self.browse)         self._classify=tk.Button(self,text="Classify",bg="red",fg="white", command=self.classify)         self._label=tk.Label(self, text="IMAGE CLASSIFICATION USING DEEP LERAINING.", bg="blue", fg="white",height=0, font=("bold", 00))      def _display_widgets(self):          self._label.pack(fill='y')         self._entry.pack(fill='x', expand=True)         self._button.pack(fill='y')         self._classify.pack(fill='y')      def retrieve_input(self):         #str0 = self._entry.get()         #a=a.replace('/','//')         print (str0)     