added my_agent

app.py

@@ -27,7 +27,7 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
 model = OpenAIServerModel(
                 model_id="gpt-4.1-mini",
-                api_key=os.environ.get('OPENAI_API_KEY'),
+                api_key=os.getenv('OPENAI_API_KEY'),
         )
 # PROMPTS
 system_prompt = """You are a general AI assistant. I will ask you a question.
@@ -150,7 +150,7 @@ def analyze_image(image_path: str, task: str) -> str:
     Returns:
         str: Result of the analysis as a string.
     """
-    client = OpenAI(api_key=os.environ.get('OPENAI_API_KEY'))
+    client = OpenAI(api_key=os.getenv('OPENAI_API_KEY'))
 
     with open(image_path, "rb") as f:
         encoded_image = base64.b64encode(f.read()).decode("utf-8")
@@ -189,7 +189,7 @@ mp3_to_text_tool = Tool.from_space(
     api_name="/transcribe"
 )
 
-agent = CodeAgent(
+my_agent = CodeAgent(
         tools=[
             DuckDuckGoSearchTool(),
             VisitWebpageTool(),
@@ -228,7 +228,7 @@ def run_and_submit_all( profile: gr.OAuthProfile | None):
 
     # 1. Instantiate Agent ( modify this part to create your agent)
     try:
-        agent = agent
+        agent = my_agent
     except Exception as e:
         print(f"Error instantiating agent: {e}")
         return f"Error initializing agent: {e}", None