gui/controls/gridview.py
def _get_column_headings(self):
        "Return a list of children sub-components that are column headings"
        # return it in the same order as inserted in the Grid
        headers = [ctrl for ctrl in self if isinstance(ctrl, GridColumn)]
        return sorted(headers, key=lambda ch: ch.index)
def _get_column_headings(self):
        "Return a list of children sub-components that are column headings"
        # return it in the same order as inserted in the Grid
        headers = [ctrl for ctrl in self if isinstance(ctrl, GridColumn)]
        return sorted(headers, key=lambda ch: ch.index)
def _get_column_headings ( self ) : # return it in the same order as inserted in the Grid
 headers = [ ctrl for ctrl in self if isinstance ( ctrl , GridColumn ) ] return sorted ( headers , key = lambda ch : ch . index )
Return a list of children sub-components that are column headings
Return a list of children sub - components that are column headings