Fix session/batch type hint (#2222)

kt474 · web-flow · commit e4be17471942 · 2025-04-22T12:46:43.000-04:00
* fix session/batch type hint

* add release note
diff --git a/qiskit_ibm_runtime/batch.py b/qiskit_ibm_runtime/batch.py
@@ -84,7 +84,7 @@ class Batch(Session):
 
     def __init__(
         self,
-        backend: Optional[BackendV2] = None,
+        backend: BackendV2,
         max_time: Optional[Union[int, str]] = None,
         *,
         create_new: Optional[bool] = True,
diff --git a/qiskit_ibm_runtime/session.py b/qiskit_ibm_runtime/session.py
@@ -83,7 +83,7 @@ class Session:
 
     def __init__(
         self,
-        backend: Optional[BackendV2] = None,
+        backend: BackendV2,
         max_time: Optional[Union[int, str]] = None,
         *,
         create_new: Optional[bool] = True,
diff --git a/release-notes/unreleased/2222.bug.rst b/release-notes/unreleased/2222.bug.rst
@@ -0,0 +1,2 @@
+Removed the incorrect ``Optional`` type hint for the ``backend`` 
+parameter in :class:`~.Session` and :class:`~.Batch`.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Removed the incorrect ``Optional`` type hint for the ``backend``
	`2`	+parameter in :class:`~.Session` and :class:`~.Batch`.