remove print()in prompt, remove the PIL and CV2.

app.py

@@ -163,10 +163,7 @@ class BasicAgent:
             You may freely think, reason, and use tools or your own knowledge as needed to solve the problem.
             
             IMPORTANT OUTPUT INSTRUCTIONS:
-            - When you need to return your final answer, use print() to output it
-            - For example: print("Qxf7") or print("42") or print("unknown")
-            - DO NOT just write the answer as a standalone variable
-            - If you cannot solve the problem, use: print("unknown")
+            When you need to return your final answer, just output the answer directly
             
             Answer format requirements:
             - If the answer is a number, output only the number (no units, no commas)
@@ -180,13 +177,10 @@ class BasicAgent:
                 files_prompt = f"\n[You have the following attached files available: {', '.join(files)}]\n"
                 # 添加文件处理指导
                 files_prompt += """
-    To work with image files, you can:
-    1. Use PIL (from PIL import Image) to load and analyze images
-    2. Use cv2 (import cv2) for image processing
-    3. For chess positions, you might need to analyze the board position pixel by pixel
-    4. Consider using OCR libraries if there's text in the image
-    """
-            
+                    Note: PIL and cv2 imports are restricted in this environment. 
+                    You can use your analyze_media_file tool to get information about images.
+                    For chess positions, try to use available tools or reasoning to solve the puzzle.
+                    """            
             full_question = system_prompt + files_prompt + "\n\n" + question
             return self.agent.run(full_question)
         except Exception as e: