Integration

[bensimner]

Integrate with master/

[HarveyHunt]

I've noticed that when lots get full and there is nowhere to park, the simulation raises an exception:

Traceback (most recent call last):
  File "/home/hunt/code/parking/simulation/simulation.py", line 784, in attempt_routine
    await car.retry(now, plot)
  File "/home/hunt/code/parking/simulation/simulation.py", line 485, in retry
    self.waypoints += get_route(rp, bestLot.lot.location, self.waypoints[-1].time, self.speed)
AttributeError: 'NoneType' object has no attribute 'lot'

This is due to bestLot being set to None and not being updated:

https://github.com/educationallylimited/parking/pull/23/files#diff-81dcd941ac2ae10867d3df2e0c956d99R387

The car should probably just remain where it is if it can't find a valid lot to park in.

I imagine you can reproduce this with any args that mean you have many cars and only a few lots. Here's the command line I used:

python -m simulation --num-spaces 10 --num-cars 100 --car-seed 1528299115 --parking-seed 1528299115