diff --git a/notebooks/seminar01.ipynb b/notebooks/seminar01.ipynb
index 219affecd8a2e57ddcfc845dd7f3af5fd4e2b31d..ef271eeb7e58025fb30daa1b5eb9d4dbab839351 100644
--- a/notebooks/seminar01.ipynb
+++ b/notebooks/seminar01.ipynb
@@ -12,9 +12,7 @@
   },
   {
    "cell_type": "markdown",
-   "metadata": {
-    "toc": true
-   },
+   "metadata": {},
    "source": [
     "<h1>Table of Contents<span class=\"tocSkip\"></span></h1>\n",
     "<div class=\"toc\"><ul class=\"toc-item\"><li><span><a href=\"#Ihre-Lernziele:\" data-toc-modified-id=\"Ihre-Lernziele:-1\"><span class=\"toc-item-num\">1&nbsp;&nbsp;</span>Ihre Lernziele:</a></span></li><li><span><a href=\"#Exkurs:-Was-mir-an-Python-gefällt:\" data-toc-modified-id=\"Exkurs:-Was-mir-an-Python-gefällt:-2\"><span class=\"toc-item-num\">2&nbsp;&nbsp;</span>Exkurs: Was mir an Python gefällt:</a></span></li><li><span><a href=\"#Programme\" data-toc-modified-id=\"Programme-3\"><span class=\"toc-item-num\">3&nbsp;&nbsp;</span>Programme</a></span><ul class=\"toc-item\"><li><span><a href=\"#Eine-erste-Anweisung\" data-toc-modified-id=\"Eine-erste-Anweisung-3.1\"><span class=\"toc-item-num\">3.1&nbsp;&nbsp;</span>Eine erste Anweisung</a></span></li><li><span><a href=\"#Python-Programme-starten\" data-toc-modified-id=\"Python-Programme-starten-3.2\"><span class=\"toc-item-num\">3.2&nbsp;&nbsp;</span>Python-Programme starten</a></span></li><li><span><a href=\"#Arithmetik\" data-toc-modified-id=\"Arithmetik-3.3\"><span class=\"toc-item-num\">3.3&nbsp;&nbsp;</span>Arithmetik</a></span></li></ul></li><li><span><a href=\"#Werte-und-Datentypen\" data-toc-modified-id=\"Werte-und-Datentypen-4\"><span class=\"toc-item-num\">4&nbsp;&nbsp;</span>Werte und Datentypen</a></span></li><li><span><a href=\"#Formale-und-natürliche-Sprachen\" data-toc-modified-id=\"Formale-und-natürliche-Sprachen-5\"><span class=\"toc-item-num\">5&nbsp;&nbsp;</span>Formale und natürliche Sprachen</a></span></li><li><span><a href=\"#Exkurs:-Programmierer\" data-toc-modified-id=\"Exkurs:-Programmierer-6\"><span class=\"toc-item-num\">6&nbsp;&nbsp;</span>Exkurs: Programmierer</a></span></li><li><span><a href=\"#Debugging\" data-toc-modified-id=\"Debugging-7\"><span class=\"toc-item-num\">7&nbsp;&nbsp;</span>Debugging</a></span></li><li><span><a href=\"#Glossar\" data-toc-modified-id=\"Glossar-8\"><span class=\"toc-item-num\">8&nbsp;&nbsp;</span>Glossar</a></span></li><li><span><a href=\"#Übung\" data-toc-modified-id=\"Übung-9\"><span class=\"toc-item-num\">9&nbsp;&nbsp;</span>Übung</a></span><ul class=\"toc-item\"><li><span><a href=\"#Aufgabe-1\" data-toc-modified-id=\"Aufgabe-1-9.1\"><span class=\"toc-item-num\">9.1&nbsp;&nbsp;</span>Aufgabe 1</a></span></li><li><span><a href=\"#Aufgabe-2\" data-toc-modified-id=\"Aufgabe-2-9.2\"><span class=\"toc-item-num\">9.2&nbsp;&nbsp;</span>Aufgabe 2</a></span></li></ul></li></ul></div>"
@@ -548,40 +546,9 @@
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-   "language": "python",
-   "name": "python3"
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-    "name": "ipython",
-    "version": 3
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-   "file_extension": ".py",
-   "mimetype": "text/x-python",
    "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.7.6"
-  },
-  "toc": {
-   "base_numbering": 1,
-   "nav_menu": {},
-   "number_sections": true,
-   "sideBar": true,
-   "skip_h1_title": true,
-   "title_cell": "Table of Contents",
-   "title_sidebar": "Contents",
-   "toc_cell": true,
-   "toc_position": {
-    "height": "479.259px",
-    "left": "302px",
-    "top": "223.926px",
-    "width": "281.331px"
-   },
-   "toc_section_display": true,
-   "toc_window_display": true
+   "pygments_lexer": "ipython3"
   }
  },
  "nbformat": 4,