diff --git a/pythonintro/DataTypes.ipynb b/pythonintro/DataTypes.ipynb
index b541d830d2a5038feddbd893c9d3947a7bfc2fce..0d668397392006b67406e19f77c7ee89d51177d3 100644
--- a/pythonintro/DataTypes.ipynb
+++ b/pythonintro/DataTypes.ipynb
@@ -56,6 +56,7 @@
       ]
     },
     {
+      "attachments": {},
       "cell_type": "markdown",
       "metadata": {
         "id": "YNpDZH69EEDK"
@@ -63,8 +64,8 @@
       "source": [
         "### Extending lists\n",
         "\n",
-        "There are multiple ways to add new elements to a list ```l````\n",
-        "(note that normally we would use more descriptive variable names instead of just \"l\"!)\n",
+        "There are multiple ways to add new elements to a list ```my_list```\n",
+        "(note that normally we would use more descriptive variable names instead of just ```my_list``` !)\n",
         "\n",
         "*   add a new element at the end of the list: ```l.append(element)```\n",
         "*   insert an element at a specific position: ```l.insert(index, element)```\n",
diff --git a/pythonintro/FirstSteps.ipynb b/pythonintro/FirstSteps.ipynb
index 4ede0b9401f8a0289e9a6675faa09c8406459daf..709b62fce6e76b25a6e0942899762a1ff80c9b22 100644
--- a/pythonintro/FirstSteps.ipynb
+++ b/pythonintro/FirstSteps.ipynb
@@ -31,7 +31,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [
     {
@@ -40,7 +40,7 @@
        "7"
       ]
      },
-     "execution_count": 1,
+     "execution_count": 12,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -58,7 +58,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 13,
    "metadata": {},
    "outputs": [
     {
@@ -67,7 +67,7 @@
        "1.5"
       ]
      },
-     "execution_count": 2,
+     "execution_count": 13,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -87,7 +87,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -105,7 +105,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 14,
    "metadata": {},
    "outputs": [
     {
@@ -114,7 +114,7 @@
        "34"
       ]
      },
-     "execution_count": 6,
+     "execution_count": 14,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -133,7 +133,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 19,
+   "execution_count": 15,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -153,7 +153,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [
     {
@@ -162,7 +162,7 @@
        "int"
       ]
      },
-     "execution_count": 8,
+     "execution_count": 16,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -192,7 +192,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 17,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -209,7 +209,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 18,
    "metadata": {},
    "outputs": [
     {
@@ -236,7 +236,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 11,
+   "execution_count": 19,
    "metadata": {},
    "outputs": [
     {
@@ -266,14 +266,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 21,
+   "execution_count": 20,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "The circumference is 44 cm.\n"
+      "The circumference is 34 cm.\n"
      ]
     }
    ],
@@ -420,7 +420,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 20,
+   "execution_count": 21,
    "metadata": {},
    "outputs": [
     {
@@ -463,7 +463,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3.10.6 ('pythonintro-A08DqnGu-py3.10')",
+   "display_name": "datascienceintro-eVBNPtpL-py3.10",
    "language": "python",
    "name": "python3"
   },
@@ -482,7 +482,7 @@
   "orig_nbformat": 4,
   "vscode": {
    "interpreter": {
-    "hash": "eb3a944512c48027e49906d9e47d21cfb9b2c1ddd33f9b79c72df4b5e3a553dc"
+    "hash": "402de31444172310c7be4e347cbdab8859808fc8e2ecdac42a940ed3f4ddd2fb"
    }
   }
  },