diff --git a/src/pipecat/audio/turn/smart_turn/local_smart_turn_v3.py b/src/pipecat/audio/turn/smart_turn/local_smart_turn_v3.py
index e62131e0c..84f6b5622 100644
--- a/src/pipecat/audio/turn/smart_turn/local_smart_turn_v3.py
+++ b/src/pipecat/audio/turn/smart_turn/local_smart_turn_v3.py
@@ -94,10 +94,10 @@ class LocalSmartTurnAnalyzerV3(BaseSmartTurn):
             sample_rate: The sample rate of the audio data.
             suffix: Optional suffix to append to the filename (e.g., "_raw", "_padded").
         """
-        import wave
-        from datetime import datetime
         import os
         import threading
+        import wave
+        from datetime import datetime
 
         # Generate filename with current timestamp (millisecond precision)
         timestamp = datetime.now().strftime("%Y-%m-%d__%H:%M:%S.%f")[:-3]
@@ -177,4 +177,4 @@ class LocalSmartTurnAnalyzerV3(BaseSmartTurn):
         return {
             "prediction": prediction,
             "probability": probability,
-        }
\ No newline at end of file
+        }
diff --git a/src/pipecat/utils/env.py b/src/pipecat/utils/env.py
index b3467c1f4..cb66a5400 100644
--- a/src/pipecat/utils/env.py
+++ b/src/pipecat/utils/env.py
@@ -18,6 +18,7 @@ class InvalidEnvVarValueError(ValueError):
     """Raised when an environment variable value cannot be parsed."""
 
     def __init__(self, name: str, value: str, expected: str):
+        """Initialize an InvalidEnvVarValueError."""
         super().__init__(f"Invalid value for env var {name!r}: {value!r}. Expected {expected}.")
         self.name = name
         self.value = value
@@ -35,7 +36,6 @@ def env_truthy(name: str, default: bool = False) -> bool:
     - Truthy: "1", "true", "yes", "y", "on"
     - Falsy:  "0", "false", "no", "n", "off", ""
     """
-
     raw = os.getenv(name)
     if raw is None:
         return default
@@ -49,6 +49,5 @@ def env_truthy(name: str, default: bool = False) -> bool:
     raise InvalidEnvVarValueError(
         name=name,
         value=raw,
-        expected='true or false',
+        expected="true or false",
     )
-