self.image_path = filedialog.askopenfilename(title="Select Image", filetypes=(("jpeg files", "*.jpg"), ("all files", "*.*")))

This code opens a file dialog box that allows the user to select an image file (in this case, with a .jpg file extension) and stores the file path as a string in the variable self.image_path. The file types parameter in the filedialog.askopenfilename method limits the files that the user can select to only those with a .jpg extension or all files.