pick_btn = Button(root, text="Pick Image", command=pickImage, width=20, bg="green") pick_btn.pack() sketch_btn = Button(root, text="Sketch", command=lambda: Sketch.do_sketch(pathString.get()), width=15) sketch_btn.pack() ice_btn = Button(root, text="Ice", command=lambda: Ice.do_ice(pathString.get()), width=15) ice_btn.pack() comic_btn = Button(root, text="Comic", command=lambda: Comic.do_comic(pathString.get()), width=15) comic_btn.pack() sepia_btn = Button(root, text="Sepia", command=lambda: Sepia.do_sepia(pathString.get()), width=15) sepia_btn.pack()