app.py

from routes import Routes

# Graph: AB5, BC4, CD8, DC8, DE6, AD5, CE2, EB3, AE7
graph = {
          'A': {'B': 5, 'D': 5, 'E': 7 },
          'B': {'C': 4},
          'C': {'D': 8, 'E': 2},
          'D': {'C': 8, 'E':  6},
          'E': {'B': 3}
        }

r = Routes(graph)