Dijkstar python package: Shared memory graph

multiProcessingGraph.py

# https://pypi.python.org/pypi/Dijkstar
from dijkstar import Graph, find_path
from multiprocessing import Process, Manager
import collections

manager = Manager()
class GraphProxy(Graph):	

	def __init__(self, data=None):	
		# replaces default _data and _incoming attributes to a equivalent object (dict), but in shared memory
		self._data = manager.dict()		
		self._incoming = collections.defaultdict(manager.dict)
		if data is not None:
			self.update(data)

class GraphHolder(object):

	def __init__(self):
		self.graph = GraphProxy()
		self.graph.add_edge(1, 2, 10)
		self.graph.add_edge(2, 3, 50)

class Processer(Process):
	
	def __init__(self, graphHolder):
		Process.__init__(self)
		self.graphHolder = graphHolder

	def run(self):
		while True:
			result = find_path(self.graphHolder.graph, 1, 3)
			print(result)

myGraph = GraphHolder()
myProcesser = Processer(myGraph)
myProcesser.start()

# Main process should be still running when myProcessor's process start
# ref: https://stackoverflow.com/questions/25455462/share-list-between-process-in-python-server/25456494#25456494
while True:
	pass