Jak zaakceptować INVALIDFILEEXception w Python

from tkinter import messagebox
from tkinter import filedialog

from openpyxl.utils.exceptions import InvalidFileException
...

    def browseXLL(self,event):
        try:
            file = filedialog.askopenfilename()
        except InvalidFileException:

            self.window.destroy()
            self.__init__()
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