Fix fmt

Author: calixteman

vm/src/obj/objlist.rs

@@ -1,5 +1,6 @@
 use super::super::pyobject::{
-    IdProtocol, PyContext, PyFuncArgs, PyObject, PyObjectPayload, PyObjectRef, PyResult, TypeProtocol,
+    IdProtocol, PyContext, PyFuncArgs, PyObject, PyObjectPayload, PyObjectRef, PyResult,
+    TypeProtocol,
 };
 use super::super::vm::{ReprGuard, VirtualMachine};
 use super::objbool;