simplejson.errors.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[bufemc]

Very interesting project, found it via:

https://fosdem.org/2020/schedule/event/creating_gpx_tracks_from_cycle_routes_in_openstreetmap/

First point IMHO: the README and internal code comments could explain more.

Second: I had to install newer modules than specified in requirements.txt - with the specified versions it failed to install.
Used OS: Win10. If I remember correctly the pain started with Fiona.. let me re-check, yep:

A GDAL API version must be specified. Provide a path to gdal-config using a GDAL_CONFIG environment variable or use a GDAL_VERSION environment variable.

However, when installing manually shapely, plotly, pandas, overpass, gpxpy, in this order, everything worked.

But I still get this, see last lines:

C:\Python3\python.exe C:/workspace/python/OpenCycleExport/export_cycle_route.py
INFO:__main__:process route france_ncn_V43
INFO:open_cycle_export.route_downloader.query_overpass:query overpass
INFO:__main__:downloaded 1557 route features
INFO:__main__:waypoint cache not found
INFO:open_cycle_export.route_processor.route_processor:create line strings for 1557 features
INFO:open_cycle_export.route_processor.route_processor:processing 1557 ways to find waypoints
INFO:open_cycle_export.route_processor.way_processor:create line segment from 1557 ways (0.0)
INFO:open_cycle_export.route_processor.way_processor:find intersecting lines
INFO:open_cycle_export.route_processor.way_processor:split ways into line segments
INFO:open_cycle_export.route_processor.way_processor:found 1656 line segments
INFO:open_cycle_export.route_processor.way_processor:find line segment costs (8.133967638015747)
INFO:open_cycle_export.route_processor.way_processor:create waypoints (0.009994029998779297)
INFO:open_cycle_export.route_processor.way_processor:create waypoints from line segments
INFO:open_cycle_export.route_processor.way_processor:sort 1572 extracted waypoints
INFO:open_cycle_export.route_processor.way_processor:make empty matrixes for results (0.4837009906768799)
INFO:open_cycle_export.route_processor.way_processor:loop through all waypoint connections (0.2218625545501709)
INFO:open_cycle_export.route_processor.way_processor:process ways complete (51.27227187156677)
INFO:open_cycle_export.route_downloader.query_overpass:query overpass
INFO:__main__:downloaded 1197 place features
INFO:open_cycle_export.route_processor.route_processor:creating route using 1572 waypoints
INFO:__main__:export gpx files for both directions
Traceback (most recent call last):
  File "C:/workspace/python/OpenCycleExport/export_cycle_route.py", line 247, in <module>
    create_route("France", "ncn", "V43")
  File "C:/workspace/python/OpenCycleExport/export_cycle_route.py", line 225, in create_route
    export_gpx_route(route_a_to_b, route_a_to_b_name)
  File "C:/workspace/python/OpenCycleExport/export_cycle_route.py", line 51, in export_gpx_route
    elevations = find_elevations(coordinates)
  File "C:\workspace\python\OpenCycleExport\open_cycle_export\route_exporter\elevation_finder.py", line 24, in find_elevations
    response = request.json()
  File "C:\Python3\lib\site-packages\requests\models.py", line 898, in json
    return complexjson.loads(self.text, **kwargs)
  File "C:\Python3\lib\site-packages\simplejson\__init__.py", line 525, in loads
    return _default_decoder.decode(s)
  File "C:\Python3\lib\site-packages\simplejson\decoder.py", line 370, in decode
    obj, end = self.raw_decode(s)
  File "C:\Python3\lib\site-packages\simplejson\decoder.py", line 400, in raw_decode
    return self.scan_once(s, idx=_w(s, idx).end())
  File "C:\Python3\lib\site-packages\simplejson\scanner.py", line 79, in scan_once
    return _scan_once(string, idx)
  File "C:\Python3\lib\site-packages\simplejson\scanner.py", line 70, in _scan_once
    raise JSONDecodeError(errmsg, string, idx)
simplejson.errors.JSONDecodeError: Expecting value: line 1 column 1 (char 0)