diff --git a/python/packages/core/agent_framework/__init__.py b/python/packages/core/agent_framework/__init__.py
index a098159a50..13d7bade00 100644
--- a/python/packages/core/agent_framework/__init__.py
+++ b/python/packages/core/agent_framework/__init__.py
@@ -277,11 +277,11 @@
     "USER_AGENT_TELEMETRY_DISABLED_ENV_VAR",
     "Agent",
     "AgentContext",
-    "AgentFrameworkException",
     "AgentEvalConverter",
     "AgentExecutor",
     "AgentExecutorRequest",
     "AgentExecutorResponse",
+    "AgentFrameworkException",
     "AgentMiddleware",
     "AgentMiddlewareLayer",
     "AgentMiddlewareTypes",
diff --git a/python/packages/core/tests/core/test_exceptions.py b/python/packages/core/tests/core/test_exceptions.py
index 47b3a53197..b22faedc1e 100644
--- a/python/packages/core/tests/core/test_exceptions.py
+++ b/python/packages/core/tests/core/test_exceptions.py
@@ -2,7 +2,6 @@
 
 """Tests for AgentFrameworkException inner_exception handling."""
 
-import pytest
 
 from agent_framework import AgentFrameworkException
 
diff --git a/python/samples/01-get-started/05_functional_workflow_with_agents.py b/python/samples/01-get-started/05_functional_workflow_with_agents.py
index 05e5f2637f..7ffb0165c4 100644
--- a/python/samples/01-get-started/05_functional_workflow_with_agents.py
+++ b/python/samples/01-get-started/05_functional_workflow_with_agents.py
@@ -37,6 +37,8 @@ async def poem_workflow(topic: str) -> str:
     poem = (await writer.run(f"Write a poem about: {topic}")).text
     review = (await reviewer.run(f"Review this poem: {poem}")).text
     return f"Poem:\n{poem}\n\nReview: {review}"
+
+
 # </create_workflow>
 
 
diff --git a/python/samples/01-get-started/06_functional_workflow_basics.py b/python/samples/01-get-started/06_functional_workflow_basics.py
index 8033a7ac4e..a679e70a99 100644
--- a/python/samples/01-get-started/06_functional_workflow_basics.py
+++ b/python/samples/01-get-started/06_functional_workflow_basics.py
@@ -36,6 +36,8 @@ async def text_workflow(text: str) -> str:
     """Uppercase the text, then reverse it."""
     upper = await to_upper_case(text)
     return await reverse_text(upper)
+
+
 # </create_workflow>
 
 
diff --git a/python/samples/04-hosting/a2a/agent_framework_to_a2a.py b/python/samples/04-hosting/a2a/agent_framework_to_a2a.py
index 0693b61b0a..6e68f21a02 100644
--- a/python/samples/04-hosting/a2a/agent_framework_to_a2a.py
+++ b/python/samples/04-hosting/a2a/agent_framework_to_a2a.py
@@ -51,7 +51,7 @@
     agent = Agent(
         client=OpenAIChatClient(),
         name="Europe Travel Agent",
-        instructions="You are a helpful Europe Travel Agent. You can help users search and book flights and hotels across Europe."
+        instructions="You are a helpful Europe Travel Agent. You can help users search and book flights and hotels across Europe.",
     )
 
     request_handler = DefaultRequestHandler(
diff --git a/python/samples/04-hosting/azure_functions/03_reliable_streaming/requirements.txt b/python/samples/04-hosting/azure_functions/03_reliable_streaming/requirements.txt
index c11cbc3552..50559b41d1 100644
--- a/python/samples/04-hosting/azure_functions/03_reliable_streaming/requirements.txt
+++ b/python/samples/04-hosting/azure_functions/03_reliable_streaming/requirements.txt
@@ -13,3 +13,6 @@
 
 # Azure authentication
 azure-identity
+
+# Redis client with asyncio support (used by redis_stream_response_handler.py)
+redis[asyncio]
diff --git a/python/samples/04-hosting/durabletask/03_single_agent_streaming/requirements.txt b/python/samples/04-hosting/durabletask/03_single_agent_streaming/requirements.txt
index 860b74ae33..bf1ed3fa30 100644
--- a/python/samples/04-hosting/durabletask/03_single_agent_streaming/requirements.txt
+++ b/python/samples/04-hosting/durabletask/03_single_agent_streaming/requirements.txt
@@ -12,3 +12,6 @@
 
 # Azure authentication
 azure-identity
+
+# Redis client with asyncio support (used by redis_stream_response_handler.py)
+redis[asyncio]