diff --git a/src/strands/models/sagemaker.py b/src/strands/models/sagemaker.py
index 7f8b8ff51..1fe630fdc 100644
--- a/src/strands/models/sagemaker.py
+++ b/src/strands/models/sagemaker.py
@@ -353,7 +353,7 @@ async def stream(
                         logger.info("choice=<%s>", json.dumps(choice, indent=2))
 
                         # Handle text content
-                        if choice["delta"].get("content", None):
+                        if choice["delta"].get("content"):
                             if not text_content_started:
                                 yield self.format_chunk({"chunk_type": "content_start", "data_type": "text"})
                                 text_content_started = True
@@ -367,7 +367,7 @@ async def stream(
                             )
 
                         # Handle reasoning content
-                        if choice["delta"].get("reasoning_content", None):
+                        if choice["delta"].get("reasoning_content"):
                             if not reasoning_content_started:
                                 yield self.format_chunk(
                                     {"chunk_type": "content_start", "data_type": "reasoning_content"}
@@ -392,7 +392,7 @@ async def stream(
                             finish_reason = choice["finish_reason"]
                             break
 
-                        if choice.get("usage", None):
+                        if choice.get("usage"):
                             yield self.format_chunk(
                                 {"chunk_type": "metadata", "data": UsageMetadata(**choice["usage"])}
                             )
@@ -412,7 +412,7 @@ async def stream(
                 # Handle tool calling
                 logger.info("tool_calls=<%s>", json.dumps(tool_calls, indent=2))
                 for tool_deltas in tool_calls.values():
-                    if not tool_deltas[0]["function"].get("name", None):
+                    if not tool_deltas[0]["function"].get("name"):
                         raise Exception("The model did not provide a tool name.")
                     yield self.format_chunk(
                         {"chunk_type": "content_start", "data_type": "tool", "data": ToolCall(**tool_deltas[0])}
@@ -453,7 +453,7 @@ async def stream(
                     yield self.format_chunk({"chunk_type": "content_stop", "data_type": "text"})
 
                 # Handle reasoning content
-                if message.get("reasoning_content", None):
+                if message.get("reasoning_content"):
                     yield self.format_chunk({"chunk_type": "content_start", "data_type": "reasoning_content"})
                     yield self.format_chunk(
                         {
@@ -465,7 +465,7 @@ async def stream(
                     yield self.format_chunk({"chunk_type": "content_stop", "data_type": "reasoning_content"})
 
                 # Handle the tool calling, if any
-                if message.get("tool_calls", None) or message_stop_reason == "tool_calls":
+                if message.get("tool_calls") or message_stop_reason == "tool_calls":
                     if not isinstance(message["tool_calls"], list):
                         message["tool_calls"] = [message["tool_calls"]]
                     for tool_call in message["tool_calls"]:
@@ -484,9 +484,9 @@ async def stream(
                 # Message close
                 yield self.format_chunk({"chunk_type": "message_stop", "data": message_stop_reason})
                 # Handle usage metadata
-                if final_response_json.get("usage", None):
+                if final_response_json.get("usage"):
                     yield self.format_chunk(
-                        {"chunk_type": "metadata", "data": UsageMetadata(**final_response_json.get("usage", None))}
+                        {"chunk_type": "metadata", "data": UsageMetadata(**final_response_json.get("usage"))}
                     )
         except (
             self.client.exceptions.InternalFailure,
@@ -556,7 +556,7 @@ def format_request_message_content(cls, content: ContentBlock, **kwargs: Any) ->
                 "thinking": content["reasoningContent"].get("reasoningText", {}).get("text", ""),
                 "type": "thinking",
             }
-        elif not content.get("reasoningContent", None):
+        elif not content.get("reasoningContent"):
             content.pop("reasoningContent", None)
 
         if "video" in content:
diff --git a/src/strands/tools/_caller.py b/src/strands/tools/_caller.py
index 1e0ca2c8d..97485d068 100644
--- a/src/strands/tools/_caller.py
+++ b/src/strands/tools/_caller.py
@@ -120,7 +120,7 @@ def _find_normalized_tool_name(self, name: str) -> str:
         """Lookup the tool represented by name, replacing characters with underscores as necessary."""
         tool_registry = self._agent.tool_registry.registry
 
-        if tool_registry.get(name, None):
+        if tool_registry.get(name):
             return name
 
         # If the desired name contains underscores, it might be a placeholder for characters that can't be