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+{
+ "cells": [
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "id": "83bcd4b9",
+ "metadata": {},
+ "outputs": [
+ {
+ "data": {
+ "text/html": [
+ "
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+ "\n",
+ "
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+ " \n",
+ " \n",
+ " | \n",
+ " customer_id | \n",
+ " rentals_05_2005 | \n",
+ " rentals_06_2005 | \n",
+ " difference | \n",
+ "
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+ " \n",
+ " \n",
+ " \n",
+ " | 0 | \n",
+ " 1 | \n",
+ " 2 | \n",
+ " 7 | \n",
+ " 5 | \n",
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+ "text/plain": [
+ " customer_id rentals_05_2005 rentals_06_2005 difference\n",
+ "0 1 2 7 5\n",
+ "1 2 1 1 0\n",
+ "2 3 2 4 2\n",
+ "3 5 3 5 2\n",
+ "4 6 3 4 1"
+ ]
+ },
+ "execution_count": 1,
+ "metadata": {},
+ "output_type": "execute_result"
+ }
+ ],
+ "source": [
+ "import pandas as pd\n",
+ "from sqlalchemy import create_engine\n",
+ "from urllib.parse import quote_plus\n",
+ "\n",
+ "password = quote_plus(\"Gazeb@85\")\n",
+ "\n",
+ "engine = create_engine(\n",
+ " f\"mysql+pymysql://root:{password}@localhost:3306/sakila\"\n",
+ ")\n",
+ "\n",
+ "def rentals_month(engine, month, year):\n",
+ " query = \"\"\"\n",
+ " SELECT *\n",
+ " FROM rental\n",
+ " WHERE MONTH(rental_date) = %(month)s\n",
+ " AND YEAR(rental_date) = %(year)s;\n",
+ " \"\"\"\n",
+ " \n",
+ " return pd.read_sql(\n",
+ " query,\n",
+ " engine,\n",
+ " params={\"month\": month, \"year\": year}\n",
+ " )\n",
+ "\n",
+ "\n",
+ "def rental_count_month(rentals_df, month, year):\n",
+ " column_name = f\"rentals_{month:02d}_{year}\"\n",
+ " \n",
+ " rental_count = (\n",
+ " rentals_df\n",
+ " .groupby(\"customer_id\")\n",
+ " .size()\n",
+ " .reset_index(name=column_name)\n",
+ " )\n",
+ " \n",
+ " return rental_count\n",
+ "\n",
+ "\n",
+ "def compare_rentals(df_month_1, df_month_2):\n",
+ " comparison = pd.merge(\n",
+ " df_month_1,\n",
+ " df_month_2,\n",
+ " on=\"customer_id\",\n",
+ " how=\"inner\"\n",
+ " )\n",
+ " \n",
+ " rental_columns = [\n",
+ " col for col in comparison.columns \n",
+ " if col.startswith(\"rentals_\")\n",
+ " ]\n",
+ " \n",
+ " comparison[\"difference\"] = (\n",
+ " comparison[rental_columns[1]] - comparison[rental_columns[0]]\n",
+ " )\n",
+ " \n",
+ " return comparison\n",
+ "\n",
+ "\n",
+ "rentals_may = rentals_month(engine, 5, 2005)\n",
+ "rentals_june = rentals_month(engine, 6, 2005)\n",
+ "\n",
+ "rentals_may_count = rental_count_month(rentals_may, 5, 2005)\n",
+ "rentals_june_count = rental_count_month(rentals_june, 6, 2005)\n",
+ "\n",
+ "comparison_df = compare_rentals(rentals_may_count, rentals_june_count)\n",
+ "\n",
+ "comparison_df.head()"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "1929046c",
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ }
+ ],
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