From 8c99ef7356cf2397a67efc814659daff325867ec Mon Sep 17 00:00:00 2001
From: BLUELOVETH <blueloveTH@foxmail.com>
Date: Wed, 20 Sep 2023 10:37:36 +0800
Subject: [PATCH] ...

---
 src/pocketpy.cpp | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/pocketpy.cpp b/src/pocketpy.cpp
index 55c8af2a..26dfe0fa 100644
--- a/src/pocketpy.cpp
+++ b/src/pocketpy.cpp
@@ -682,7 +682,7 @@ void init_builtins(VM* _vm) {
         std::stringstream ss;
         ss << '[';
         for(int i=0; i<iterable.size(); i++){
-            ss << vm->py_repr(iterable[i]);
+            ss << CAST(Str&, vm->py_repr(iterable[i]));
             if(i != iterable.size()) ss << ',';
         }
         ss << ']';
@@ -694,7 +694,7 @@ void init_builtins(VM* _vm) {
         std::stringstream ss;
         ss << '[';
         for(int i=0; i<iterable.size(); i++){
-            ss << vm->py_json(iterable[i]);
+            ss << CAST(Str&, vm->py_json(iterable[i]));
             if(i != iterable.size()) ss << ',';
         }
         ss << ']';
@@ -705,8 +705,14 @@ void init_builtins(VM* _vm) {
         Tuple& iterable = _CAST(Tuple&, _0);
         std::stringstream ss;
         ss << '(';
-        for(int i=0; i<iterable.size(); i++){
-            ss << vm->py_repr(iterable[i]);
+        if(iterable.size() == 1){
+            ss << CAST(Str&, vm->py_repr(iterable[0]));
+            ss << ',';
+        }else{
+            for(int i=0; i<iterable.size(); i++){
+                ss << vm->py_repr(iterable[i]);
+                if(i != iterable.size()) ss << ',';
+            }
         }
         ss << ')';
         return VAR(ss.str());
@@ -717,7 +723,7 @@ void init_builtins(VM* _vm) {
         std::stringstream ss;
         ss << '[';
         for(int i=0; i<iterable.size(); i++){
-            ss << vm->py_json(iterable[i]);
+            ss << CAST(Str&, vm->py_json(iterable[i]));
             if(i != iterable.size()) ss << ',';
         }
         ss << ']';