TypeError：“ Route”对象不可下标Python

Question

This is a script I have that reads a JSON file and adds routes to a graph

 for route in data['routes']:
        route = Route(route['ports'][0], route['ports'][1], route['distance'])
        self.add_route(route)
        route_2 = Route (route['ports'][1], route['ports'][0], route['distance'])
        self.add_route(route_2)

It gives me this error:

Traceback (most recent call last):
  File "C:\workspace\Assignment2.1\src\Main.py", line 75, in <module>
    graph.build_from_file()
  File "C:\workspace\Assignment2.1\src\Graph.py", line 195, in build_from_file
    route_2 = Route (route['ports'][1], route['ports'][0], route['distance'])
TypeError: 'Route' object is not subscriptable

Notice it gives an error at the second call of the Route constructor not first. Can anyone help me out with this?

Answer 1

You named two different things route .

After you created your first Route , the route variable is pointing to it instead of your datum.

Fixed code:

for route in data['routes']:
    route_1 = Route(route['ports'][0], route['ports'][1], route['distance'])
    self.add_route(route_1)
    route_2 = Route(route['ports'][1], route['ports'][0], route['distance'])
    self.add_route(route_2)