Type Error TypeError: '<' not supported between instances of 'ContourInfo' and 'ContourInfo'

[Maria-Moosa]

The code works fine for a some of my own images, but for a few images I get this TypeError:

Traceback (most recent call last):
File "page_dewarp.py", line 918, in
main()
File "page_dewarp.py", line 871, in main
spans = assemble_spans(name, small, pagemask, cinfo_list)
File "page_dewarp.py", line 493, in assemble_spans
candidate_edges.sort()
TypeError: '<' not supported between instances of 'ContourInfo' and 'ContourInfo'

[Kiode]

I meet the same error when I use my own image as input.

[ethanthai2]

We will sort only the first element of the tuple. Change that line to:

candidate_edges.sort(key=lambda x: x[0])