{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "# -*- coding: utf-8 -*-\n",
    "\"\"\"\n",
    "Created on Thu Jan 14 11:28:44 2021\n",
    "@author: Usuario\n",
    "    \n",
    "## Interactuar con paginas web en tiempo real ##\n",
    "    \n",
    "    \n",
    "# Se quiere scrapear una web en la que se simula la tirada de un dado \"\"\"\n",
    "import mechanicalsoup"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "En primer lugar hay que determinar que elemento de la pagina<br>\n",
    "contiene el resultado de la tirada (Codigo fuente de la web) <br>\n",
    "   <h2 id=\"result\">1</h2>"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Creamos el objeto Browser"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [],
   "source": [
    "browser = mechanicalsoup.Browser()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Solicitud de la URL deseada"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [],
   "source": [
    "page = browser.get(\"http://olympus.realpython.org/dice\")"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Buscamos el elemento con id=result. <br>\n",
    "En este caso utilizamos el selector de ID de CSS (#) para indicar que<br>\n",
    "lo que queremos es el valor del id."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [],
   "source": [
    "tag = page.soup.select(\"#result\")[0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [],
   "source": [
    "result = tag.text"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "The result of your dice roll is: 3\n"
     ]
    }
   ],
   "source": [
    "print(f\"The result of your dice roll is: {result}\")    "
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Para obtener resultados continuamente hay que crear un bucle <br>\n",
    "que cargue la pagina en cada caso. Añadimos un tiempo de espera entre tiradas"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Ejemplo modulo .sleep()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import time"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print(\"I'm about to wait for five seconds...\")\n",
    "time.sleep(5)\n",
    "print(\"Done waiting!\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import time\n",
    "import mechanicalsoup"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "browser = mechanicalsoup.Browser()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for i in range(4):\n",
    "    page = browser.get(\"http://olympus.realpython.org/dice\")\n",
    "    tag = page.soup.select(\"#result\")[0]\n",
    "    result = tag.text\n",
    "    print(f\"The result of your dice roll is: {result}\")\n",
    "    time.sleep(10) # Tiempo espera\n",
    "    \n",
    "# Optimizamos el codigo para no tener que esperar 10seg en la tirada 4    \n",
    "    \n",
    "import time\n",
    "import mechanicalsoup"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "browser = mechanicalsoup.Browser()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "for i in range(4):\n",
    "    page = browser.get(\"http://olympus.realpython.org/dice\")\n",
    "    tag = page.soup.select(\"#result\")[0]\n",
    "    result = tag.text\n",
    "    print(f\"The result of your dice roll is: {result}\")\n",
    "\n",
    "    # Esperamos 10seg siempre que no sea la ultima tirada\n",
    "    if i < 3:\n",
    "        time.sleep(10)    "
   ]
  }
 ],
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