Restore ipynb files

.gitignore

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-lessons/*.ipynb
 .ipynb_checkpoints/
 .tool-versions

lessons/00 index.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "id": "b3f7b25f",
+   "metadata": {
+    "id": "RQ73d6XVysi7"
+   },
+   "source": [
+    "# CDH course \"Programming in Python\"\n",
+    "\n",
+    "**November 2023 edition**\n",
+    "\n",
+    "[Teams channel](https://teams.microsoft.com/l/channel/19%3aAlr7pcE2v9p1eaKT1BtNxJAB9mgCFT1olZvAMswJlEc1%40thread.tacv2/Algemeen?groupId=7fd15384-6748-4852-8646-d96963fb3524&tenantId=d72758a0-a446-4e0f-a0aa-4bf95a4a10e7)\n",
+    "\n",
+    "## Course modules\n",
+    "\n",
+    "1. [Introduction](https://colab.research.google.com/drive/1KVMLkUIYyUHK3svD9pLfVdhzpdhqIA1B)\n",
+    "2. [Values and expressions](https://colab.research.google.com/drive/1FUicKa-_d5CINVGrHQdwnEpVFZlMbtkA)\n",
+    "3. [Conditionals](https://colab.research.google.com/drive/1qQzRBD1e-1yCKtUNAt8L2lRb8tGjYpkR)\n",
+    "4. [Datastructures](https://colab.research.google.com/drive/1CS9CxET2V1j0FQzy82AWBZZCbc8M_qWt)\n",
+    "5. [Assertions](https://colab.research.google.com/drive/1ixrL5RCpNhtQN_MtCbpy4E5PYEG1N-qH)\n",
+    "6. [Loops](https://colab.research.google.com/drive/14qxBVO9t3w-pFFnMuS_yhggUmM5S0BnZ)\n",
+    "7. [Functions](https://colab.research.google.com/drive/146De3ZjgWYldNBmKkDyu8-m_jkzUTrGg)\n",
+    "8. [Debugging](https://colab.research.google.com/drive/1r6wuOuEHabI0vmBg15HVFBLiNKRb-jnS)\n",
+    "9. [String manipulation](https://colab.research.google.com/drive/15djL6RWOHmSo7rpQMOLE1ga9bICxBLmm)\n",
+    "10. [Dictionaries](https://colab.research.google.com/drive/1Dssqf65thuWCNZ9I3ezaawelaWpeaWoj)\n",
+    "11. [Working with files](https://colab.research.google.com/drive/1_mDpeRCHzrGJstcxEWZgq5YMhHujPdfe)\n",
+    "\n",
+    "## Extra material\n",
+    "\n",
+    "- [Functions exercises](https://colab.research.google.com/drive/1gdZjsBNSfDzJAl-Z-mdt3ui2w5uGldAi)\n",
+    "- [Tips](https://colab.research.google.com/drive/1-Qm1VYjy-c8H6gIyW92QPxDJ4fQeZnZh)\n",
+    "- [Life after the course](https://colab.research.google.com/drive/1Uf6IzqaKprwMXRP_vsyTKXbmVdYON9vl)\n",
+    "\n",
+    "## Projects\n",
+    "\n",
+    "- [Text analysis](https://colab.research.google.com/drive/1Iq_s0AtiqCMHnP1SdqecwLxYUiaBwxvD)\n",
+    "\n",
+    "## Exercise solutions\n",
+    "\n",
+    "1. [Introduction](https://colab.research.google.com/drive/13q9wUC6QRT3hDuvLOuctuph9yZYeEvVu)\n",
+    "2. [Values and expressions](https://colab.research.google.com/drive/1R0_DYzufN6PSKpot8iBmn1Gh6mNSOCy5)\n",
+    "3. [Conditionals](https://colab.research.google.com/drive/1-vBxja7MWudomSKEg1NU5D3JO0SEQc3J)\n",
+    "4. [Datastructures](https://colab.research.google.com/drive/1mf_sQpAVxz8oRbsZnA548cC3TtVaQxmU)\n",
+    "5. [Assertions](https://colab.research.google.com/drive/1yrrB0EYglFKJ0_zhb91xY7FGgJosSUFw)\n",
+    "6. [Loops](https://colab.research.google.com/drive/19mQnQILY7oRREvwUsAD2SmqQHiOffgx_)\n",
+    "7. [Functions](https://colab.research.google.com/drive/1BdBQeTKBvEPn1CTIJC5sDDY6VBMs32Sq)\n",
+    "8. Debugging has no solutions notebook\n",
+    "9. [String manipulation](https://colab.research.google.com/drive/1wOUWUUP4KdYUFzp5-fALi5t_k_4ovow1)\n",
+    "10. [Dictionaries](https://colab.research.google.com/drive/1j1hikQCS3Px0_q4hguuIqWSXSmyKcAiN)\n",
+    "11. [Working with files](https://colab.research.google.com/drive/1a5fHoa8eY_ABZereDQLcSnV5w3AUYSav)"
+   ]
+  }
+ ],
+ "metadata": {
+  "jupytext": {
+   "main_language": "python"
+  },
+  "kernelspec": {
+   "display_name": "Python 3",
+   "name": "python3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}