recurse_upstream issue

[wkitlasten]

I am running into this issue with the DN3 network in Otago. Presumably it is an issue in the network. Is it a network connection/routing issue? Shapefile topology issue? Something else?

File "D:\modelling\nzmf6\nzmf6\utils.py", line 315, in add_sfr
n = swn.SurfaceWaterNetwork.from_lines(lines.geometry)
File "d:\modelling\surface-water-network\swn\core.py", line 336, in from_lines
recurse_upstream(segnum, segnum, 0, 0.0)
File "d:\modelling\surface-water-network\swn\core.py", line 333, in recurse_upstream
recurse_upstream(from_segnum, cat_group, num, dist)
File "d:\modelling\surface-water-network\swn\core.py", line 333, in recurse_upstream
recurse_upstream(from_segnum, cat_group, num, dist)
File "d:\modelling\surface-water-network\swn\core.py", line 333, in recurse_upstream
recurse_upstream(from_segnum, cat_group, num, dist)
[Previous line repeated 976 more times]
File "d:\modelling\surface-water-network\swn\core.py", line 329, in recurse_upstream
dist += obj.segments.geometry[segnum].length
File "C:\ProgramData\Anaconda3\envs\py37\lib\site-packages\geopandas\geoseries.py", line 558, in getitem
return self._wrapped_pandas_method("getitem", key)
File "C:\ProgramData\Anaconda3\envs\py37\lib\site-packages\geopandas\geoseries.py", line 551, in _wrapped_pandas_method
val = getattr(super(GeoSeries, self), mtd)(*args, **kwargs)
File "C:\ProgramData\Anaconda3\envs\py37\lib\site-packages\pandas\core\series.py", line 942, in getitem
return self._get_value(key)
File "C:\ProgramData\Anaconda3\envs\py37\lib\site-packages\pandas\core\series.py", line 1052, in _get_value
return self.index._get_values_for_loc(self, loc, label)
File "C:\ProgramData\Anaconda3\envs\py37\lib\site-packages\pandas\core\indexes\base.py", line 5184, in _get_values_for_loc
return series._values[loc]
File "C:\ProgramData\Anaconda3\envs\py37\lib\site-packages\geopandas\array.py", line 376, in getitem
if isinstance(idx, numbers.Integral):
File "C:\ProgramData\Anaconda3\envs\py37\lib\abc.py", line 139, in instancecheck
return _abc_instancecheck(cls, instance)
File "C:\ProgramData\Anaconda3\envs\py37\lib\abc.py", line 143, in subclasscheck
return _abc_subclasscheck(cls, subclass)
RecursionError: maximum recursion depth exceeded in comparison