trac #31590: add missing optional statements

sagemath · Jan 5, 2022 · 37a5b40 · 37a5b40
1 parent 7537643
commit 37a5b40
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/sage/graphs/graph_generators.py b/src/sage/graphs/graph_generators.py
@@ -1553,9 +1553,9 @@ def plantri_gen(self, options=""):
 
         Wrong input, ``"-c 3"`` instead of ``"-c3"``::
 
-            sage: list(graphs.plantri_gen("6 -c3"))
+            sage: list(graphs.plantri_gen("6 -c3"))  # optional plantri
             [Graph on 6 vertices, Graph on 6 vertices]
-            sage: list(graphs.plantri_gen("6 -c 3"))
+            sage: list(graphs.plantri_gen("6 -c 3"))  # optional plantri
             Traceback (most recent call last):
             ...
             AttributeError: invalid options '6 -c 3'