{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from math import sqrt\n",
    "i = 1\n",
    "s = 0\n",
    "item = 1\n",
    "while item > 0.000001:\n",
    "    s = s + item\n",
    "    i = i + 1\n",
    "    item = 1 / (i * i)\n",
    "pi = sqrt(6 * s)\n",
    "print(\"pi 的值是{}\".format(pi))"
   ]
  }
 ],
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   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
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   "title_cell": "Table of Contents",
   "title_sidebar": "Contents",
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   "toc_position": {},
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}