Load data from a Excel-formatted CSV file.

async def _load(self):
        """
        Load data from a Excel-formatted CSV file.
        """

        flags = self._kwargs.get('flags')

        if not flags:
            flags = {1: {}}

        cols = {k: [] for k in flags.keys()}

        with open(self._file_path, newline='', encoding='utf-8') as f:
            reader = csv.reader(f)

            for row in reader:
                for i, col in cols.items():
                    try:
                        val = row[i].strip()
                        assert val
                    except (IndexError, AssertionError):
                        pass
                    else:
                        col.append((row[0], val))

        for i, col in cols.items():
            self._update({self._locale: col}, flags[i])