def read_input(self, input_cls, filename, **kwargs):
        """
        Read in input and do some minimal preformatting
        input_cls - the class to use to read the input
        filename - input filename
        """
        input_inst = input_cls()
        input_inst.read_input(filename)
        return input_inst.get_data()
Read in input and do some minimal preformatting
        input_cls - the class to use to read the input
        filename - input filename