diff --git a/port/linux/.vscode/launch.json b/port/linux/.vscode/launch.json
index a0afd6b6a..16e1afc1e 100644
--- a/port/linux/.vscode/launch.json
+++ b/port/linux/.vscode/launch.json
@@ -18,6 +18,7 @@
             "program": "${workspaceFolder}/build/test/pikascript_test",
             // "program": "${workspaceFolder}/../build/src/boot/demo06-pikamain/pikascript_demo06-pikamain",
             "args": [
+                "--gtest_filter=pikaMain.list__set__",
                 // "--gtest_filter=VM.a_jjcc",
                 // "--gtest_filter=parser.a_cuohao_j",
                 // "--gtest_filter=lexser.jjcc",
diff --git a/port/linux/package/pikascript/PikaStdData.py b/port/linux/package/pikascript/PikaStdData.py
index 32b6f6f45..14be9d06c 100644
--- a/port/linux/package/pikascript/PikaStdData.py
+++ b/port/linux/package/pikascript/PikaStdData.py
@@ -29,11 +29,11 @@ class List(TinyObj):
         pass
 
     # support list[]  = val
-    def __set__(obj: any, key: any, val: any, obj_str: str):
+    def __set__(__key: any, __val: any):
         pass
 
     # support val = list[] 
-    def __get__() -> any:
+    def __get__(__key: any) -> any:
         pass
 
 class Dict(TinyObj):
@@ -59,11 +59,11 @@ class Dict(TinyObj):
         pass
 
     # support dict[]  = val
-    def __set__(obj: any, key: any, val: any, obj_str: str):
+    def __set__(__key: any, __val: any):
         pass
 
     # support val = dict[] 
-    def __get__() -> any:
+    def __get__(__key: any) -> any:
         pass
 
 
@@ -81,11 +81,11 @@ class String(TinyObj):
         pass
 
     # support string[]  = val
-    def __set__(obj: any, key: any, val: any, obj_str: str):
+    def __set__(__key: any, __val: any):
         pass
 
     # support val = string[] 
-    def __get__() -> any:
+    def __get__(__key: any) -> any:
         pass
 
 class ByteArray(List):
diff --git a/port/linux/test/sysObj-test.cpp b/port/linux/test/sysObj-test.cpp
index 51f39fc1e..df66bca3d 100644
--- a/port/linux/test/sysObj-test.cpp
+++ b/port/linux/test/sysObj-test.cpp
@@ -31,7 +31,7 @@ TEST(sysObj, noMethod) {
     // printf("sysout = %s\r\n", sysOut);
     // ASSERT_EQ(1, strEqu((char*)"[error] runner: method no found.", sysOut));
     EXPECT_STREQ(log_buff[4],
-                 "[error] name 'printttt' is not defined\r\n");
+                 "NameError: name 'printttt' is not defined\r\n");
     // ASSERT_EQ(2, errCode);
     // obj_deinit(globals);
     obj_deinit(obj);
diff --git a/src/PikaVM.c b/src/PikaVM.c
index 61685b4ec..6eb6047a5 100644
--- a/src/PikaVM.c
+++ b/src/PikaVM.c
@@ -33,6 +33,11 @@
 #include "PikaPlatform.h"
 #include "dataStrs.h"
 
+/* head declear start */
+static uint8_t VMState_getInputArgNum(VMState* vs);
+
+/* head declear end */
+
 static InstructUnit* VMState_getInstructNow(VMState* vs) {
     return instructArray_getByOffset(&(vs->bytecode_frame->instruct_array),
                                      vs->pc);
@@ -172,7 +177,7 @@ static Arg* VM_instruction_handler_REF(PikaObj* self, VMState* vs, char* data) {
     }
     if (NULL == arg) {
         VMState_setErrorCode(vs, 1);
-        __platform_printf("[error] name '%s' is not defined\r\n", data);
+        __platform_printf("NameError: name '%s' is not defined\r\n", data);
     }
     return arg;
 }
@@ -206,7 +211,7 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self, VMState* vs, char* data) {
     if (NULL == method_host_obj) {
         /* error, not found object */
         VMState_setErrorCode(vs, 1);
-        __platform_printf("[error] runner: method '%s' no found.\r\n", data);
+        __platform_printf("Error: method '%s' no found.\r\n", data);
         goto RUN_exit;
     }
     /* get method in local */
@@ -218,7 +223,7 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self, VMState* vs, char* data) {
     if (NULL == method_arg) {
         /* error, method no found */
         VMState_setErrorCode(vs, 2);
-        __platform_printf("[error] name '%s' is not defined\r\n", data);
+        __platform_printf("NameError: name '%s' is not defined\r\n", data);
 
         goto RUN_exit;
     }
@@ -241,12 +246,28 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self, VMState* vs, char* data) {
     }
 
     sub_locals = New_PikaObj();
+    uint8_t arg_num_dec = 0;
+    if (strEqu("", type_list)) {
+        arg_num_dec = 0;
+    } else {
+        arg_num_dec = strCountSign(type_list, ',') + 1;
+    }
+    if (method_type == ARG_TYPE_OBJECT_METHOD) {
+        /* delete the 'self' */
+        arg_num_dec--;
+    }
+    uint8_t arg_num_input = VMState_getInputArgNum(vs);
+    if (arg_num_dec != arg_num_input) {
+        VMState_setErrorCode(vs, 3);
+        __platform_printf(
+            "TypeError: %s() takes %d positional argument but %d were "
+            "given\r\n",
+            data, arg_num_dec, arg_num_input);
+        goto RUN_exit;
+    }
+
     /* load pars */
-    while (1) {
-        /* no arg */
-        if (')' == method_dec[1]) {
-            break;
-        }
+    for (int i = 0; i < arg_num_dec; i++) {
         char* argDef = strPopLastToken(type_list, ',');
         strPopLastToken(argDef, ':');
         char* argName = argDef;
@@ -254,10 +275,6 @@ static Arg* VM_instruction_handler_RUN(PikaObj* self, VMState* vs, char* data) {
         call_arg = arg_setName(call_arg, argName);
         args_setArg(sub_locals->list, call_arg);
         call_arg_index++;
-        /* reach the last */
-        if (argDef == type_list) {
-            break;
-        }
     }
 
     /* load 'self' as the first arg when call object method */
@@ -455,8 +472,8 @@ static uint8_t VMState_getInputArgNum(VMState* vs) {
 static Arg* VM_instruction_handler_OPT(PikaObj* self, VMState* vs, char* data) {
     Arg* outArg = NULL;
     uint8_t input_arg_num = VMState_getInputArgNum(vs);
-    Arg* arg2;
-    Arg* arg1;
+    Arg* arg2 = NULL;
+    Arg* arg1 = NULL;
     if (input_arg_num == 2) {
         /* tow input */
         arg2 = stack_popArg(&(vs->stack));
@@ -538,7 +555,7 @@ static Arg* VM_instruction_handler_OPT(PikaObj* self, VMState* vs, char* data) {
         if (0 == num2_f) {
             VMState_setErrorCode(vs, 1);
             args_setSysOut(vs->locals->list,
-                           "[error] operator: division by zero");
+                           "ZeroDivisionError: division by zero");
             outArg = NULL;
             goto OPT_exit;
         }