def clear_descendants(self, source, clear_source=True):
        """Clear values and nodes calculated from `source`."""
        removed = self.cellgraph.clear_descendants(source, clear_source)
        for node in removed:
            del node[OBJ].data[node[KEY]]
def clear_descendants(self, source, clear_source=True):
        """Clear values and nodes calculated from `source`."""
        removed = self.cellgraph.clear_descendants(source, clear_source)
        for node in removed:
            del node[OBJ].data[node[KEY]]
def clear_descendants ( self , source , clear_source = True ) : removed = self . cellgraph . clear_descendants ( source , clear_source ) for node in removed : del node [ OBJ ] . data [ node [ KEY ] ]
Clear values and nodes calculated from `source`.
Clear values and nodes calculated from source .