1: import pydot, pickle, random, math, sys, os
2:
3: if os.path.exists(sys.argv[1]):
4: file = open(sys.argv[1], 'r')
5: graph = pickle.load(file)
6: file.close()
7: else:
8: graph = pydot.Dot(name='Graph')
9:
10: for x in range(2, len(sys.argv), 2):
11: graph.add_edge(pydot.Edge(sys.argv[x], sys.argv[x + 1]))
12:
13: graph.write_png('graph.png', prog='dot')
14:
15: file = open(sys.argv[1], 'w')
16: pickle.dump(graph, file)
17: file.close()