def columns(self):
        """Index of the column names present in the DataFrame in order.

        Returns
        -------
        Index

        """
        return Index(np.array(self._gather_column_names(), dtype=np.bytes_), np.dtype(np.bytes_))
def columns ( self ) : return Index ( np . array ( self . _gather_column_names ( ) , dtype = np . bytes_ ) , np . dtype ( np . bytes_ ) )
Index of the column names present in the DataFrame in order.

        Returns
        -------
        Index