Tutorial 35 - Decoradores.ipynb

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      "Me decoraron\n",
      "Soy una funcion simple\n"
     ]
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    "#Los decoradores agregan funcionalidades a un programa existente\n",
    "#Se lo conoce tambien como 'metaprogramacion', ya que una parte del programa intenta modificar otra parte del mismo\n",
    "\n",
    "#Demostracion\n",
    "\n",
    "def decorar(func):\n",
    "    def funcion_interna():\n",
    "        print(\"Me decoraron\")\n",
    "        func()\n",
    "    return funcion_interna\n",
    "\n",
    "def funcion_simple():\n",
    "    print(\"Soy una funcion simple\")\n",
    "    \n",
    "decor = decorar(funcion_simple)\n",
    "decor()"
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      "Me decoraron\n",
      "Soy una funcion simple\n"
     ]
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   "source": [
    "#La forma correcta de utilizar estos decoradores es mediante @\n",
    "\n",
    "def decorar(func):\n",
    "    def funcion_interna():\n",
    "        print(\"Me decoraron\")\n",
    "        func()\n",
    "    return funcion_interna\n",
    "\n",
    "@decorar  #Esto indica que la funcion definida a continuacion se utiliza como argunmento de la func 'decorar'\n",
    "def funcion_simple():\n",
    "    print(\"Soy una funcion simple\")\n",
    "    \n",
    "funcion_simple()"
   ]
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      "Estoy dividiendo  15  y 3\n",
      "5.0\n",
      "Estoy dividiendo  15  y 0\n",
      "No se puede dividir por cero!\n",
      "None\n"
     ]
    }
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   "source": [
    "#Otro ejemplo\n",
    "def mi_division_inteligente(func):\n",
    "    def func_interna(x,y):\n",
    "        print(\"Estoy dividiendo \",x,\" y\",y)\n",
    "        if y == 0:\n",
    "            print(\"No se puede dividir por cero!\")\n",
    "            return\n",
    "        \n",
    "        return func(x,y)\n",
    "    return func_interna\n",
    "\n",
    "@mi_division_inteligente\n",
    "def dividir(a,b):            #Anteriormente decorabamos la funcion y la reasignabamos como \n",
    "    return a/b               #dividir = mi_division_inteligente(dividir)\n",
    "\n",
    "print(dividir(15,3))\n",
    "print(dividir(15,0))\n"
   ]
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