PyCharm Code Inspect fixes (#18392)

Signed-off-by: UltralyticsAssistant <web@ultralytics.com>
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

ultralytics/solutions/streamlit_inference.py

@@ -181,12 +181,8 @@ class Inference:
 if __name__ == "__main__":
     import sys  # Import the sys module for accessing command-line arguments
 
-    model = None  # Initialize the model variable as None
-
     # Check if a model name is provided as a command-line argument
     args = len(sys.argv)
-    if args > 1:
-        model = args  # Assign the first argument as the model name
-
+    model = args if args > 1 else None
     # Create an instance of the Inference class and run inference
     Inference(model=model).inference()