def preProcessFunc(self):
        # create preprocess
        print("Got The Data")

        path = self.labelBrowse.get()
        if path == "":
            messagebox.showinfo("Error", "You have to input path ")
        else:
            if path.endswith(".xlsx"):
                self.bool = True
                self.preprocess = KMeansClustering.Preprocess(path)
                # clean_na
                self.preprocess.clean_na()
                # normalize
                self.preprocess.standardization()
                # aggregate by country
                self.preprocess.aggregate_by_country()
                messagebox.showinfo("Pre-processing",
                                    "Preprocessing completed successfully!")
            else:
                messagebox.showinfo(
                    "Error", "You should Enter Path And Ends with xlsx !")