python - TypeError：'Route' 对象不可下标 Python

Question

这是我拥有的一个脚本，它读取 JSON 文件并将路由添加到图表

 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)

它给了我这个错误：

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

请注意，它在第二次调用 Route 构造函数时出现错误，而不是第一次。谁能帮我解决这个问题？

Answer 1

你命名了两个不同的东西route。

创建第一个 后Route，route变量指向它而不是您的数据。

固定代码：

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)