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   "source": [
    "Iteración usando while\n",
    "===\n",
    "\n",
    "* Duración de la lección: 4:05 min"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "fin\n"
     ]
    }
   ],
   "source": [
    "#\n",
    "# Estructura básica de un while\n",
    "# ===============================================\n",
    "#\n",
    "counter = 0\n",
    "\n",
    "while counter < 5:\n",
    "    #\n",
    "    # Cuerpo del while\n",
    "    #\n",
    "    print(counter)\n",
    "    counter = counter + 1\n",
    "\n",
    "print(\"fin\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "#\n",
    "# El cuerpo del while nunca se ejecuta\n",
    "#\n",
    "value = 10\n",
    "\n",
    "while value < 5:\n",
    "\n",
    "    print(value)\n",
    "    value += 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n",
      "3\n",
      "4\n",
      "5\n",
      "6\n",
      "7\n",
      "8\n",
      "9\n"
     ]
    }
   ],
   "source": [
    "#\n",
    "# Estructura equivalente entre un for y un while\n",
    "# ===============================================\n",
    "#\n",
    "for num in range(2, 10):\n",
    "    print(num)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n",
      "3\n",
      "4\n",
      "5\n",
      "6\n",
      "7\n",
      "8\n",
      "9\n"
     ]
    }
   ],
   "source": [
    "num = 2\n",
    "while num < 10:\n",
    "    print(num)\n",
    "    num += 1"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Comando else en estructuras for y while"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "cuerpo else\n",
      "fin\n"
     ]
    }
   ],
   "source": [
    "n = 0\n",
    "while n < 5:\n",
    "    print(n)\n",
    "    n = n + 1\n",
    "else:\n",
    "    #\n",
    "    # Es posible pero en la práctica\n",
    "    # no se usa\n",
    "    #\n",
    "    print(\"cuerpo else\")\n",
    "\n",
    "print(\"fin\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n",
      "cuerpo else\n",
      "fin\n"
     ]
    }
   ],
   "source": [
    "for n in range(5):\n",
    "    print(n)\n",
    "    n = n + 1\n",
    "else:\n",
    "    print(\"cuerpo else\")\n",
    "\n",
    "print(\"fin\")"
   ]
  }
 ],
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