import sys, os
sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(os.path.realpath(__file__)))))
import networkx as nx
import matplotlib.pyplot as plt

g = nx.Graph()
g.add_node('a')
g.add_node('b')
g.add_node('c')
g.add_node('d')
g.add_edge('a', 'b')
g.add_edge('b','c')
g.add_edge('b','d')
posx = nx.spring_layout(g)

print(posx)
for n in posx:
    print(n)

nx.draw(g, posx)
plt.show()