Steps To Reproduce

g = DiGraph([(1, 2)])
list(yen_k_shortest_simple_paths(g, 1, 1, report_edges=True, report_weight=True))

Expected Behavior

[(0, [])] (returned value shoud have weight information)

Actual Behavior

[[]]

Additional Information

We may be able to solve issue by updating this part

to this code.

if source == target:
     if report_weight:
          if report_edges:
               yield (0, [])
         else:
                yield (0, [source])
        else:
              if report_edges:
                  yield []
              else:
                    yield [source]
      return

Environment

• OS: macOS Sequioa 15.3.1
• Sage Version: 10.6

Checklist

• I have searched the existing issues for a bug report that matches the one I want to file, without success.

  I have read the documentation and troubleshoot guide
  To pick up a draggable item, press the space bar. While dragging, use the arrow keys to move the item. Press space again to drop the item in its new position, or press escape to cancel.