update: Added a system prompt class for returning system messages; now users can directly import and use it and fix ruff format

Author: syedmuneeb321

examples/servers/system_prompt.py

@@ -1,28 +1,26 @@
-from mcp.server import FastMCP 
-
-# from dotenv import load_dotenv
-import os
 from mcp.server.fastmcp import FastMCP
 from mcp.server.fastmcp.prompts import base as mcp_messages
 
-mcp = FastMCP("weather") # No reason to initialize stateless 
-
-
+mcp = FastMCP("weather")
 
 
 @mcp.prompt()
 def weather_system_prompt() -> mcp_messages.SystemMessage:
     """
-    Creates a prompt asking an AI to weather 
+    Creates a prompt asking an AI to weather
     Args:
         None: None
     """
-    
-    return mcp_messages.SystemMessage("""You are a helpful weather agent. Your job is to answer weather-related questions clearly and simply. If the user asks for the weather in a city, you tell the current weather, temperature, and a short description like "sunny," "cloudy," or "rainy." If you don’t know the answer, say "Sorry, I don’t have that information.""")
+
+    return mcp_messages.SystemMessage(
+         "You are a helpful agent. You answer questions clearly and simply. "
+        "If you don’t know something, say you don’t have that information."
+    )
 
 
 mcp_app = mcp.streamable_http_app()
 
 if __name__ == "__main__":
     import uvicorn
-    uvicorn.run("system_prompt:mcp_app", host="0.0.0.0", port=8002, reload=True)
+
+    uvicorn.run("system_prompt:mcp_app", host="0.0.0.0", port=8002, reload=True)