def label_field(self, f):
        """
        Select one field as the label field.

        Note that this field will be exclude from feature fields.

        :param f: Selected label field
        :type f: str
        :rtype: DataFrame
        """
        if f is None:
            raise ValueError("Label field name cannot be None.")
        self._assert_ml_fields_valid(f)
        return _change_singleton_roles(self, {_get_field_name(f): FieldRole.LABEL}, clear_feature=True)
def label_field ( self , f ) : if f is None : raise ValueError ( "Label field name cannot be None." ) self . _assert_ml_fields_valid ( f ) return _change_singleton_roles ( self , { _get_field_name ( f ) : FieldRole . LABEL } , clear_feature = True )
Select one field as the label field.

        Note that this field will be exclude from feature fields.

        :param f: Selected label field
        :type f: str
        :rtype: DataFrame