x.delete_route(home, dest)
if str(choice) == "Add a route":
msg = "Enter the CODE of the home city"
title = "Home"
home = eg.enterbox(msg, title)
msg = "Enter the CODE of the destination city"
title = "Destination"
dest = eg.enterbox(msg, title)
msg = "Enter the distance between the cities"
title = "Distance"
distance = eg.enterbox(msg, title)
x.make_new_route_GUI(home, dest, distance)
if str(choice) == "Save":
x.save_to_disk()
if str(choice) == "Delete a city":
msg = "Please enter the CODE of the city you want to delete."
title = "Delete a City"
delete = eg.enterbox(msg, title)
x.delete_node(delete)
if str(choice) == "Add a city":
msg = "Please enter the information of the city you want to add."
title = "Add a City"
fieldValues = []
fieldNames = ["Name", "Code", "Country", "Continent", "Timezone", "Latitude (N or S)",
