The question is unfortunately not answered yet.
I'm looking for a method or python script to split polylines according to coincident points with other polylines, but avoid splitting the ones which just intersect (without a sharing point like the planarize or intersection tool in ArcGIS would produce). The "touches (second_geometry)" function might be a way but I have at the moment no clue how to solve it.
The image illustrates my aim. The yellow line hasn't changed, because it has no coincicent points with the red line. While the red line as well as the dark blue line is split into 4 different polylines, because both share a coincident point. 
Thanks for any answer in advance!
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