WTF is pyc

app.py

@@ -175,17 +175,23 @@ def evaluate_submission(file_obj, debug=False):
 
         # Import with a unique module name each time
         module_name = f"student_module_{int(time.time() * 1000000)}"
-        spec = importlib.util.spec_from_file_location(module_name, file_path)
-        student_module = importlib.util.module_from_spec(spec)
-        sys.modules[module_name] = student_module
+        
+        # Disable bytecode writing to prevent permission issues on temp directories
+        old_dont_write_bytecode = sys.dont_write_bytecode
+        sys.dont_write_bytecode = True
         
         try:
+            spec = importlib.util.spec_from_file_location(module_name, file_path)
+            student_module = importlib.util.module_from_spec(spec)
+            sys.modules[module_name] = student_module
             spec.loader.exec_module(student_module)
         except Exception as e:
             print(f"ERROR during module exec: {type(e).__name__}: {str(e)}")
             import traceback
             traceback.print_exc()
             raise
+        finally:
+            sys.dont_write_bytecode = old_dont_write_bytecode
         
         report = [f"## Results:\n"]