from igraph import *
import cairocffi
g = Graph()
g.add_vertices(3)
g.add_edges([(0,1),(1,0),(2,0),(0,2)])
for i in range(3):
	g.vs[i]["name"] = i
visual_style = {}
visual_style["vertex_label"] =g.vs["name"]
g.to_directed(False)
plot(g,"a.pdf",**visual_style)