def addRoute():
'''
This function will add a new route between two existing cities
And update all the relevant data
'''
sourcePortName = raw_input("Please enter the source port name: \n")
destPortName = raw_input("Please enter the destination port name: \n")
while True:
distance = raw_input("Please enter the distance: \n") #Check if the input is valid
if int(distance) > 0:
break
sourcePortCode = UserQuerying.nameToCode(sourcePortName)
destPortCode = UserQuerying.nameToCode(destPortName)
newSourceToDestination = RouteInfo.RouteInfo(sourcePortCode, destPortCode, int(distance))
newDestinationToSource = RouteInfo.RouteInfo(destPortCode, sourcePortCode, int(distance))
QueryingData.routeList.append(newSourceToDestination) #Append source to destination to route list
QueryingData.routeList.append(newDestinationToSource) #Append destination to source to route list
UserQuerying.addHubCity(sourcePortCode) #update hub city data
UserQuerying.addHubCity(destPortCode) #update hub city data
