Hi @asmorkalov ,

The pipeline page says, "Service is in degraded state" . Any idea on when it will be up and running...

Oh, sorry I have mistake. this pull request is not enoght to fix original issue. we have to test with "mypy".

Hi @Kumataro , I made the suggested and required changes by pushing the commit df6e3c1 to fix this issue After testing it with success in my local system.

Thank you for your continuous helping.
I think ‘git revert command` is helpful to revert commit.
After that, this pull request will be squashed into only 1 change.

git revert 6038669
git revert df6e3c1
git revert 5e5857a

And If possible, could you fix code indent like Mat ? (I think you can fix to override without reverting commit)
After reformating, you can remove draft mark.

kmtr@kmtr-VMware-Virtual-Platform:~/work/opencv4$ git diff -b 4a4031dc48475ec3354d28a3cdedda57a8913443
diff --git a/modules/python/src2/typing_stubs_generation/predefined_types.py b/modules/python/src2/typing_stubs_generation/predefined_types.py
index c5f49b5122..d32fd9b934 100644
--- a/modules/python/src2/typing_stubs_generation/predefined_types.py
+++ b/modules/python/src2/typing_stubs_generation/predefined_types.py
@@ -54,8 +54,12 @@ _PREDEFINED_TYPES = (
                             doc="Required length is 2"),
     AliasTypeNode.sequence_("Size2f", PrimitiveTypeNode.float_(),
                             doc="Required length is 2"),
-    AliasTypeNode.sequence_("Scalar", PrimitiveTypeNode.float_(),
-                            doc="Required length is at most 4"),
+    AliasTypeNode.union_(
+    "Scalar",
+    items=(SequenceTypeNode("Scalar", PrimitiveTypeNode.float_()),
+           PrimitiveTypeNode.float_()),
+    doc="Max sequence length is at most 4"
+    ),
     AliasTypeNode.sequence_("Point", PrimitiveTypeNode.int_(),
                             doc="Required length is 2"),
     AliasTypeNode.ref_("Point2i", "Point"),
kmtr@kmtr-VMware-Virtual-Platform:~/work/opencv4$

Hi @VadimLevin ,

As you suggested, I stashed all other changes except for the one suggested here #26826 (comment) for predefined_datatypes.py

Also, @Kumataro , as you indicated I kept the indent same as per the one you suggested here #26826 (comment)

Thanks for all your help.

@VadimLevin could you please have a look and let me know if anything else is needed to be done...

@VadimLevin As I newly started to the world of open-source hence I have been pretty much afraid of making any changes that might cause the sys to break, but I believe if the community supports me I would also be able to debug, test and write code in a much more professional manner.

Thank You!

@VadimLevin , thanks for reviewing and merging the PR.