Upload app.py

app.py

@@ -260,11 +260,15 @@ def create_app():
 
 # Create the app for Hugging Face Spaces
 # Spaces will automatically detect Gradio and run this
-# Use global flag to prevent duplicate initialization
+# Use global flag and module-level demo variable to prevent duplicate initialization
+_demo_instance = None
+
 if not _app_initialized:
     _app_initialized = True
     try:
-        demo = create_app()
+        print("🔄 Starting app initialization (first time)...")
+        _demo_instance = create_app()
+        demo = _demo_instance  # Expose to module level for Spaces
         print("✅ App created successfully!")
         print(f"✅ Demo type: {type(demo)}")
     except Exception as e:
@@ -292,21 +296,30 @@ if not _app_initialized:
             ```
             """
         
-        demo = gr.Interface(
+        _demo_instance = gr.Interface(
             fn=show_error,
             inputs=None,
             outputs=gr.Markdown(),
             title="CSRC Car Manual RAG System - Error",
             description="An error occurred. Please check the logs."
         )
+        demo = _demo_instance
 else:
-    # If already initialized, skip to avoid duplicate initialization
-    print("⚠️  App already initialized, skipping duplicate initialization")
-    # demo should already be defined from first initialization
-    if 'demo' not in globals():
+    # If already initialized, reuse the existing demo
+    print("⚠️  App already initialized, reusing existing demo instance")
+    if _demo_instance is not None:
+        demo = _demo_instance
+        print("✅ Reusing previously created demo")
+    else:
         # Fallback: create a simple demo if somehow not defined
+        print("⚠️  No demo instance found, creating fallback...")
         import gradio as gr
-        demo = gr.Interface(fn=lambda: "App is initializing...", inputs=None, outputs="text")
+        demo = gr.Interface(
+            fn=lambda: "App is initializing, please wait...",
+            inputs=None,
+            outputs="text",
+            title="CSRC Car Manual RAG System"
+        )
 
 # Note: Do NOT call demo.launch() here
 # Hugging Face Spaces will automatically detect and launch the demo