{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "## Introduction to Databases\n", "\n", "### [Python ODO](http://odo.pydata.org/en/latest/) \n", "\n", "\n", "![ODO image](http://odo.pydata.org/en/latest/_images/conversions.png)" ] }, { "cell_type": "code", "execution_count": 1, "metadata": {}, "outputs": [], "source": [ "!pip install -q git+git://github.com/blaze/odo" ] }, { "cell_type": "code", "execution_count": 2, "metadata": {}, "outputs": [], "source": [ "import pandas as pd\n", "from odo import odo" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "#### load source into target\n", " odo(source, target) \n", " \n", " \n", "+ odo(df, list) # create new list from Pandas DataFrame\n", "+ odo(df, []) # append onto existing list\n", "+ odo(df, 'myfile.json') # Dump dataframe to line-delimited JSON\n", "+ odo('myfiles.*.csv', Iterator) # Stream through many CSV files\n", "+ odo(df, 'postgresql://hostname::tablename') # Migrate dataframe to Postgres\n", "+ odo('myfile.*.csv', 'postgresql://hostname::tablename') # Load CSVs to Postgres\n", "+ odo('postgresql://hostname::tablename', 'myfile.json') # Dump Postgres to JSON\n", "+ odo('mongodb://hostname/db::collection', pd.DataFrame) # Dump Mongo to DataFrame\n", "\n", "Pay attention to [Data Shapes](https://odo.readthedocs.io/en/latest/datashape.html)" ] }, { "cell_type": "code", "execution_count": 3, "metadata": {}, "outputs": [ { "ename": "ValueError", "evalue": "Function has keyword-only parameters or annotations, use inspect.signature() API which can support them", "output_type": "error", "traceback": [ "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m", "\u001b[0;31mValueError\u001b[0m Traceback (most recent call last)", "\u001b[0;32m\u001b[0m in \u001b[0;36m\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mdf_fake\u001b[0m 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\u001b[0mvarkw\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mdefaults\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", "\u001b[0;31mValueError\u001b[0m: Function has keyword-only parameters or annotations, use inspect.signature() API which can support them" ] } ], "source": [ "df_fake = odo(\"../SampleDBs/fakedata.csv\", pd.DataFrame, sep='|')" ] }, { "cell_type": "code", "execution_count": null, "metadata": {}, "outputs": [], "source": [] } ], "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": "3.8.5" } }, "nbformat": 4, "nbformat_minor": 4 }