aima/search.py
def make_undirected(self):
        "Make a digraph into an undirected graph by adding symmetric edges."
        for a in self.dict.keys():
            for (b, distance) in self.dict[a].items():
                self.connect1(b, a, distance)
def make_undirected(self):
        "Make a digraph into an undirected graph by adding symmetric edges."
        for a in self.dict.keys():
            for (b, distance) in self.dict[a].items():
                self.connect1(b, a, distance)
Make a digraph into an undirected graph by adding symmetric edges.