python example results in empty geojson file

[sharedstreets]

python example results in empty geojson file

[migurski]

That’s odd! I am running the same command using the current version from this repository and seeing meaningful output for tile 16/10509/25324:

[kpwebb]

we were getting intermittent results too!

When we installed fresh we get a blank result. But I got a result when i ran from my laptop, even if we blew away the repo. I'm curious if there's something in the environment on our laptops that's changed if you start fresh...

[migurski]

I don’t have an explanation for the behavior you’re seeing. There isn’t any environment variable that affects normal operation, and I can’t think of a reason why it’d work intermittently. The protobuf URL being downloaded is defined on line 9 of tile.py.

[kpwebb]

@migurski tracked this down turns out that the URL requests were failing because the data_zxy object contained floats and was getting converted to a string with trailing zero decimals included.

No idea what changed, but seems like it was environmentally dependent. Maybe an upstream library changed behavior?

Anyhow, pushed a fix as pull #15

[migurski]

Thanks for tracking that down — I’m curious what version of Python you were using, because I can’t think of a reason this behavior would show up for you but not in tests or for me. Thanks for the PR!

[kpwebb]

We were running it on 2.7.x but only showed up when freshly installed. When I ran it from source (even from a clean github clone) it worked on my laptop. But deployments on machines where SharedStreets hadn't been installed previously failed. No idea why...

[migurski]

Weird. I wish our test coverage surfaced this behavior.