Update execute_python_code tool

server.py

@@ -259,21 +259,17 @@ async def get_active_page():
 
 @mcp.tool()
 def execute_python_code(code: str) -> str:
-    """Executes arbitrary Python 3 code in this isolated sandbox container."""
     stdout_buffer = io.StringIO()
     stderr_buffer = io.StringIO()
-    
+    namespace = {}                      # shared globals + locals
     with contextlib.redirect_stdout(stdout_buffer), contextlib.redirect_stderr(stderr_buffer):
         try:
-            exec(code, {}, {})
+            exec(code, namespace)      # <-- single arg = globals==locals
         except Exception as e:
             sys.stderr.write(f"Runtime Error: {str(e)}")
-            
     output = stdout_buffer.getvalue()
-    errors = stderr_buffer.getvalue()
-    
-    if errors:
-        return f"Errors caught during execution:\n{errors}\nPartial Output:\n{output}"
+    if stderr_buffer.getvalue():
+        return f"Errors caught during execution:\n{stderr_buffer.getvalue()}\nPartial Output:\n{output}"
     return output if output else "Code executed successfully with no returned stdout."
 
 @mcp.tool()