print("in edges: %s" % ', '.join([str(y[0]) for y in G.inboundEdges(x)]))
elif command == '6':
x = int(input("vertex: "))
G.addNode(x)
elif command == '7':
x = int(input("vertex: "))
G.removeVertex(x)
elif command == '8':
source = int(input("source: "))
target = int(input("target: "))
weight = int(input("weight: "))
G.addEdge(source, target, weight)
elif command == '9':
source = int(input("source: "))
target = int(input("target: "))
G.removeEdge(source, target)
elif command == '10':
source = int(input("source: "))
target = int(input("target: "))
print(G.Dijkstra(source)[target])
elif command == '11':
components = G.connectedComponents()
for comp in components:
print(comp)
print("There are %i connected components." % len(components))
elif command == '12':
components = G.scc()
for comp in components:
print(comp)
print("There are %i strongly connected components." % len(components))
elif command == '0':
