def graph_from_file(self, file_name):
file = open(file_name, "r")
first_line = [int(x) for x in file.readline().split()]
self.nb_sommets = first_line[0]
self.nb_arcs = first_line[1]
self.oriente = (first_line[2] == 1)
# ajout de tous les sommets
for i in range(self.nb_sommets):
line = [a for a in file.readline().split()]
sommet_cur = Sommet(line[0],
lat=float(line[1]),
long=float(line[2]))
self.sommets[line[0]] = sommet_cur
# ajout de tous les arcs
for i in range(self.nb_arcs):
line = [a for a in file.readline().split()]
if len(line) == 0:
print(i)
else:
s_source = self.sommets[line[0]]
s_cible = self.sommets[line[1]]
arc_cur = Arc(s_source, s_cible, value=float(line[2]))
self.arcs['%s%s' % (s_source.name, s_cible.name)] = arc_cur
# si le graphe n'est pas orienté, on ajoute l'inverse de chaque arc
if not self.oriente:
self.arcs['%s%s' % (s_cible.name,
s_source.name)] = arc_cur.inverse()
file.close()
