Building a commuter program for Vancouver commuters

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so I am done with this project but for some reason when I type r and r I get this error, can anyone tell me what it is?

here’s the error

Traceback (most recent call last):
File “skyroute.py”, line 117, in
skyroute()
File “skyroute.py”, line 19, in skyroute
new_route()
File “skyroute.py”, line 65, in new_route
shortest_route = get_route(start_point, end_point)
File “skyroute.py”, line 94, in get_route
shortest_route = min(routes, key=len)
ValueError: min() arg is an empty sequence

2

The error message is pretty specific.

If you look at line 94 of your code:

shortest_route = min(routes, key=len)

the error is telling you that routes is empty. The question then, is why was nothing appended to the empty list? Well, what is the route from point r to point r? That is one of the bonus features you can add. Obviously you don’t need to ride the metro from a station to the same station, so you probably want to add some code for how to handle this edge case.

image

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but how do I stop the error, is it fine like that or what part should I check?

4

You just have to add logic to handle a case when a user inputs the same destination as the starting point.

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