def select_column(self, column_name):
        """
        Get a reference to the :class:`~turicreate.SArray` that corresponds with
        the given column_name. Throws an exception if the column_name is
        something other than a string or if the column name is not found.

        Parameters
        ----------
        column_name: str
            The column name.

        Returns
        -------
        out : SArray
            The SArray that is referred by ``column_name``.

        See Also
        --------
        select_columns

        Examples
        --------
        >>> sf = turicreate.SFrame({'user_id': [1,2,3],
        ...                       'user_name': ['alice', 'bob', 'charlie']})
        >>> # This line is equivalent to `sa = sf['user_name']`
        >>> sa = sf.select_column('user_name')
        >>> sa
        dtype: str
        Rows: 3
        ['alice', 'bob', 'charlie']
        """
        if not isinstance(column_name, str):
            raise TypeError("Invalid column_nametype: must be str")
        with cython_context():
            return SArray(data=[], _proxy=self.__proxy__.select_column(column_name))