filedialog file vs filename

So far we have been using the `tkinter.filedialog.askopenfilename` and `tkinter.filedialog.asksaveasfilename` functions to obtain the location of the files to be opened and saved. Should we instead use the `tkinter.filedialog.askopenfile(mode='r', **options)` and `tkinter.filedialog.asksaveasfile(mode='w', **options)` to return the file objects instead? Would this allow us to reduce the amount of code in that we would separately not have to open the files?