PR #35903: fix doctests

Author: dcoudert

src/sage/graphs/generic_graph.py

@@ -5124,7 +5124,7 @@ def cycle_basis(self, output='vertex'):
             sage: G.cycle_basis()                                                       # optional - networkx
             [[0, 2], [2, 1, 0]]
             sage: G.cycle_basis(output='edge')                                          # optional - networkx
-            [[(0, 2, 'a'), (2, 0, 'b')], [(2, 1, 'd'), (1, 0, 'c'), (0, 2, 'a')]]
+            [[(0, 2, 'b'), (2, 0, 'a')], [(2, 1, 'd'), (1, 0, 'c'), (0, 2, 'a')]]
             sage: H = Graph([(1, 2), (2, 3), (2, 3), (3, 4), (1, 4),
             ....:            (1, 4), (4, 5), (5, 6), (4, 6), (6, 7)], multiedges=True)
             sage: H.cycle_basis()                                                       # optional - networkx
@@ -5166,10 +5166,9 @@ def cycle_basis(self, output='vertex'):
             sage: G.cycle_basis()                                                       # optional - networkx
             [[2, 3], [4, 3, 2, 1], [4, 3, 2, 1]]
             sage: G.cycle_basis(output='edge')                                          # optional - networkx
-            [[(2, 3, 'b'), (3, 2, 'c')],
+            [[(2, 3, 'c'), (3, 2, 'b')],
              [(4, 3, 'd'), (3, 2, 'b'), (2, 1, 'a'), (1, 4, 'f')],
              [(4, 3, 'e'), (3, 2, 'b'), (2, 1, 'a'), (1, 4, 'f')]]
-
         """
         if output not in ['vertex', 'edge']:
             raise ValueError('output must be either vertex or edge')