find_available_port()

app.py

@@ -12,11 +12,18 @@ from langchain_core.output_parsers import StrOutputParser
 import tempfile
 import nest_asyncio
 
-os.environ["GRADIO_SERVER_PORT"] = "7861-7870"
 
 # Apply nest_asyncio
 nest_asyncio.apply()
 
+import socket
+
+def find_available_port():
+    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    sock.bind(('localhost', 0))
+    port = sock.getsockname()[1]
+    sock.close()
+    return port
 
 # Constants
 LLM_MODEL = "gemini-1.5-flash"
@@ -156,4 +163,5 @@ with gr.Blocks(title="PDF Chatbot") as demo:
         outputs=[chat_row, file_upload_input]
     )
 
-demo.launch()
+available_port = find_available_port()
+demo.launch(server_port=available_port)