def _tk_index_to_tuple(self, value):
        """
        Convert a tkinter index to a tuple of (row, column), starting at 0
        :param value: value to convert
        :type value: str
        :return: the converted value as (row, column), both starting at 0
        :rtype: tuple of (int, int)
        """
        splitted = value.split(".")
        row = int(splitted[0]) - 1
        column = int(splitted[1])
        return (row, column)

        Convert a tkinter index to a tuple of (row, column), starting at 0
        :param value: value to convert
        :type value: str
        :return: the converted value as (row, column), both starting at 0
        :rtype: tuple of (int, int)
        
system/shui/tkui.py