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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def column(self, index_or_label):
 """Return the values of a column as an array. table.column(label) is equivalent to table[label]. ['c', 'd'] array([2, 4]) Args: label (int or str):
 The index or label of a column Returns: An instance of ``numpy.array``. Raises: ``ValueError``: When the ``index_or_label`` is not in the table. """

        if (isinstance(index_or_label, str)
                and index_or_label not in self.labels):
            raise ValueError(
                'The column "{}" is not in the table. The table contains '
                'these columns: {}'
                .format(index_or_label, ', '.join(self.labels))
            )
        if (isinstance(index_or_label, int)
                and not 0 <= index_or_label < len(self.labels)):
            raise ValueError(
                'The index {} is not in the table. Only indices between '
                '0 and {} are valid'
                .format(index_or_label, len(self.labels) - 1)
            )

        return self._columns[self._as_label(index_or_label)]