def tab(self, strings):
        """
        This function is used for arguments usage's field to vertically align words
        :param strings: list of string to align vertically
        :return: string with aligned strings
        """
        tab = ''
        for string in strings:
            if 30 < len(string):
                spaces = ' '*(30 - len(string))
                string += spaces
            tab += string

        return tab
dataset/ETHPy150Open neuropoly/spinalcordtoolbox/scripts/msct_parser.py/Usage.tab/swapped operands of `<`