diff --git a/pyscript.core/package-lock.json b/pyscript.core/package-lock.json
index 65dc2fbc..e7979f88 100644
--- a/pyscript.core/package-lock.json
+++ b/pyscript.core/package-lock.json
@@ -1,34 +1,34 @@
 {
     "name": "@pyscript/core",
-    "version": "0.4.0",
+    "version": "0.4.3",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "@pyscript/core",
-            "version": "0.4.0",
+            "version": "0.4.3",
             "license": "APACHE-2.0",
             "dependencies": {
                 "@ungap/with-resolvers": "^0.1.0",
                 "basic-devtools": "^0.1.6",
-                "polyscript": "^0.7.1",
+                "polyscript": "^0.8.1",
                 "sticky-module": "^0.1.1",
                 "to-json-callback": "^0.1.1",
                 "type-checked-collections": "^0.1.7"
             },
             "devDependencies": {
                 "@codemirror/commands": "^6.3.3",
-                "@codemirror/lang-python": "^6.1.3",
+                "@codemirror/lang-python": "^6.1.4",
                 "@codemirror/language": "^6.10.1",
                 "@codemirror/state": "^6.4.0",
-                "@codemirror/view": "^6.23.1",
+                "@codemirror/view": "^6.24.0",
                 "@playwright/test": "^1.41.2",
                 "@rollup/plugin-commonjs": "^25.0.7",
                 "@rollup/plugin-node-resolve": "^15.2.3",
                 "@rollup/plugin-terser": "^0.4.4",
                 "@webreflection/toml-j0.4": "^1.1.3",
                 "@xterm/addon-fit": "^0.9.0-beta.1",
-                "chokidar": "^3.5.3",
+                "chokidar": "^3.6.0",
                 "codemirror": "^6.0.1",
                 "eslint": "^8.56.0",
                 "rollup": "^4.9.6",
@@ -80,13 +80,15 @@
             }
         },
         "node_modules/@codemirror/lang-python": {
-            "version": "6.1.3",
-            "resolved": "https://registry.npmjs.org/@codemirror/lang-python/-/lang-python-6.1.3.tgz",
-            "integrity": "sha512-S9w2Jl74hFlD5nqtUMIaXAq9t5WlM0acCkyuQWUUSvZclk1sV+UfnpFiZzuZSG+hfEaOmxKR5UxY/Uxswn7EhQ==",
+            "version": "6.1.4",
+            "resolved": "https://registry.npmjs.org/@codemirror/lang-python/-/lang-python-6.1.4.tgz",
+            "integrity": "sha512-b6d1TDqrkCjFNvMO01SWldFiDoZ39yl3tDMC1Y5f8glA2eZpynPxJhwYVTlGFr0stizcJgrp6ojLEGH2myoZAw==",
             "dev": true,
             "dependencies": {
                 "@codemirror/autocomplete": "^6.3.2",
                 "@codemirror/language": "^6.8.0",
+                "@codemirror/state": "^6.0.0",
+                "@lezer/common": "^1.2.1",
                 "@lezer/python": "^1.1.4"
             }
         },
@@ -133,9 +135,9 @@
             "dev": true
         },
         "node_modules/@codemirror/view": {
-            "version": "6.23.1",
-            "resolved": "https://registry.npmjs.org/@codemirror/view/-/view-6.23.1.tgz",
-            "integrity": "sha512-J2Xnn5lFYT1ZN/5ewEoMBCmLlL71lZ3mBdb7cUEuHhX2ESoSrNEucpsDXpX22EuTGm9LOgC9v4Z0wx+Ez8QmGA==",
+            "version": "6.24.0",
+            "resolved": "https://registry.npmjs.org/@codemirror/view/-/view-6.24.0.tgz",
+            "integrity": "sha512-zK6m5pNkdhdJl8idPP1gA4N8JKTiSsOz8U/Iw+C1ChMwyLG7+MLiNXnH/wFuAk6KeGEe33/adOiAh5jMqee03w==",
             "dev": true,
             "dependencies": {
                 "@codemirror/state": "^6.4.0",
@@ -920,16 +922,10 @@
             }
         },
         "node_modules/chokidar": {
-            "version": "3.5.3",
-            "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.5.3.tgz",
-            "integrity": "sha512-Dr3sfKRP6oTcjf2JmUmFJfeVMvXBdegxB0iVQ5eb2V10uFJUCAS8OByZdVAyVb8xXNz3GjjTgj9kLWsZTqE6kw==",
+            "version": "3.6.0",
+            "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
+            "integrity": "sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==",
             "dev": true,
-            "funding": [
-                {
-                    "type": "individual",
-                    "url": "https://paulmillr.com/funding/"
-                }
-            ],
             "dependencies": {
                 "anymatch": "~3.1.2",
                 "braces": "~3.0.2",
@@ -942,6 +938,9 @@
             "engines": {
                 "node": ">= 8.10.0"
             },
+            "funding": {
+                "url": "https://paulmillr.com/funding/"
+            },
             "optionalDependencies": {
                 "fsevents": "~2.3.2"
             }
@@ -2403,9 +2402,9 @@
             }
         },
         "node_modules/polyscript": {
-            "version": "0.7.1",
-            "resolved": "https://registry.npmjs.org/polyscript/-/polyscript-0.7.1.tgz",
-            "integrity": "sha512-wyexafAFyJM/lL5U1SXOcsUUlfN1uJizAqo+TxmmdjaIZATX836RZVr/ymazcIAkwUK5BChNQfUIggLXQodnxg==",
+            "version": "0.8.1",
+            "resolved": "https://registry.npmjs.org/polyscript/-/polyscript-0.8.1.tgz",
+            "integrity": "sha512-ziLElKhO+NE233aNVb7Kcjbd1a3X7XMEjxLh8aUXFr9NZ9Al16zD6A0Q6XFX/m4GS2Jn69bWIeOGGeGMF6C+uA==",
             "dependencies": {
                 "@ungap/structured-clone": "^1.2.0",
                 "@ungap/with-resolvers": "^0.1.0",
diff --git a/pyscript.core/package.json b/pyscript.core/package.json
index ac44a47b..6d7000af 100644
--- a/pyscript.core/package.json
+++ b/pyscript.core/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@pyscript/core",
-    "version": "0.4.0",
+    "version": "0.4.3",
     "type": "module",
     "description": "PyScript",
     "module": "./index.js",
@@ -42,24 +42,24 @@
     "dependencies": {
         "@ungap/with-resolvers": "^0.1.0",
         "basic-devtools": "^0.1.6",
-        "polyscript": "^0.7.1",
+        "polyscript": "^0.8.1",
         "sticky-module": "^0.1.1",
         "to-json-callback": "^0.1.1",
         "type-checked-collections": "^0.1.7"
     },
     "devDependencies": {
         "@codemirror/commands": "^6.3.3",
-        "@codemirror/lang-python": "^6.1.3",
+        "@codemirror/lang-python": "^6.1.4",
         "@codemirror/language": "^6.10.1",
         "@codemirror/state": "^6.4.0",
-        "@codemirror/view": "^6.23.1",
+        "@codemirror/view": "^6.24.0",
         "@playwright/test": "^1.41.2",
         "@rollup/plugin-commonjs": "^25.0.7",
         "@rollup/plugin-node-resolve": "^15.2.3",
         "@rollup/plugin-terser": "^0.4.4",
         "@webreflection/toml-j0.4": "^1.1.3",
         "@xterm/addon-fit": "^0.9.0-beta.1",
-        "chokidar": "^3.5.3",
+        "chokidar": "^3.6.0",
         "codemirror": "^6.0.1",
         "eslint": "^8.56.0",
         "rollup": "^4.9.6",
diff --git a/pyscript.core/test/code-a-part.html b/pyscript.core/test/code-a-part.html
new file mode 100644
index 00000000..2928f29d
--- /dev/null
+++ b/pyscript.core/test/code-a-part.html
@@ -0,0 +1,19 @@
+<!doctype html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <link rel="stylesheet" href="../dist/core.css">
+        <script type="module">
+            import { hooks } from "../dist/core.js";
+            hooks.main.codeBeforeRun.add('print(0)');
+            hooks.main.codeAfterRun.add('print(2)');
+        </script>
+    </head>
+    <body>
+        <script type="py">
+            # raise an error instead to see it on line 1
+            print(1)
+        </script>
+    </body>
+</html>