{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "# Python Cheat Sheet\n", "\n", "Basic cheatsheet for Python mostly based on the book written by Al Sweigart, [Automate the Boring Stuff with Python](https://automatetheboringstuff.com/) under the [Creative Commons license](https://creativecommons.org/licenses/by-nc-sa/3.0/) and many other sources.\n", "\n", "## Read It\n", "\n", "- [Website](https://www.pythoncheatsheet.org)\n", "- [Github](https://github.com/wilfredinni/python-cheatsheet)\n", "- [PDF](https://github.com/wilfredinni/Python-cheatsheet/raw/master/python_cheat_sheet.pdf)\n", "- [Jupyter Notebook](https://mybinder.org/v2/gh/wilfredinni/python-cheatsheet/master?filepath=jupyter_notebooks)\n", "\n", "## Exception Handling\n", "\n", "### Basic exception handling" ] }, { "cell_type": "code", "execution_count": null, "metadata": {}, "outputs": [], "source": [ "def spam(divideBy):\n", " try:\n", " return 42 / divideBy\n", " except ZeroDivisionError as e:\n", " print('Error: Invalid argument: {}'.format(e))\n", "\n", "print(spam(2))\n", "print(spam(12))\n", "print(spam(0))\n", "print(spam(1))" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "### Final code in exception handling\n", "\n", "Code inside the `finally` section is always executed, no matter if an exception has been raised or\n", "not, and even if an exception is not caught." ] }, { "cell_type": "code", "execution_count": null, "metadata": {}, "outputs": [], "source": [ "def spam(divideBy):\n", " try:\n", " return 42 / divideBy\n", " except ZeroDivisionError as e:\n", " print('Error: Invalid argument: {}'.format(e))\n", " finally:\n", " print(\"-- division finished --\")\n", "\n", "print(spam(12))\n", "print(spam(0))" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.7.0" } }, "nbformat": 4, "nbformat_minor": 2 }