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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 题目一"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "请把这个核酸序列存入一个list，并数一数A、G、C、T各有多少个。"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[20, 17, 12, 21]"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "a=['AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTCTGATAGCAGC']\n",
+    "num=[0,0,0,0]\n",
+    "def number(str,list):\n",
+    "    for value in str[0]:\n",
+    "        if value=='A':\n",
+    "            num[0]+=1\n",
+    "        if value=='G':\n",
+    "            num[1]+=1\n",
+    "        if value=='C':\n",
+    "            num[2]+=1\n",
+    "        if value=='T':\n",
+    "            num[3]+=1\n",
+    "    return(num)\n",
+    "\n",
+    "number(a,num)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 题目二 "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "一个花样滑冰运动员表演后，裁判给表演内容进行评分，分数从0.25分到10分，每次增加值为0.25分。\n",
+    "\n",
+    "试生成一个元组，把可能的得分存入元组，并遍历元组的每一项，打印“一个运动员可能得_____分”。"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "一个运动员可能得0.0分\n",
+      "一个运动员可能得0.25分\n",
+      "一个运动员可能得0.5分\n",
+      "一个运动员可能得0.75分\n",
+      "一个运动员可能得1.0分\n",
+      "一个运动员可能得1.25分\n",
+      "一个运动员可能得1.5分\n",
+      "一个运动员可能得1.75分\n",
+      "一个运动员可能得2.0分\n",
+      "一个运动员可能得2.25分\n",
+      "一个运动员可能得2.5分\n",
+      "一个运动员可能得2.75分\n",
+      "一个运动员可能得3.0分\n",
+      "一个运动员可能得3.25分\n",
+      "一个运动员可能得3.5分\n",
+      "一个运动员可能得3.75分\n",
+      "一个运动员可能得4.0分\n",
+      "一个运动员可能得4.25分\n",
+      "一个运动员可能得4.5分\n",
+      "一个运动员可能得4.75分\n",
+      "一个运动员可能得5.0分\n",
+      "一个运动员可能得5.25分\n",
+      "一个运动员可能得5.5分\n",
+      "一个运动员可能得5.75分\n",
+      "一个运动员可能得6.0分\n",
+      "一个运动员可能得6.25分\n",
+      "一个运动员可能得6.5分\n",
+      "一个运动员可能得6.75分\n",
+      "一个运动员可能得7.0分\n",
+      "一个运动员可能得7.25分\n",
+      "一个运动员可能得7.5分\n",
+      "一个运动员可能得7.75分\n",
+      "一个运动员可能得8.0分\n",
+      "一个运动员可能得8.25分\n",
+      "一个运动员可能得8.5分\n",
+      "一个运动员可能得8.75分\n",
+      "一个运动员可能得9.0分\n",
+      "一个运动员可能得9.25分\n",
+      "一个运动员可能得9.5分\n",
+      "一个运动员可能得9.75分\n",
+      "一个运动员可能得10.0分\n"
+     ]
+    }
+   ],
+   "source": [
+    "import numpy as np\n",
+    "score=(np.arange(0,10.1,0.25))\n",
+    "\n",
+    "    \n",
+    "for i in score:\n",
+    "    print('一个运动员可能得{}分'.format(i))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 题目三 "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "创建一个字典，列出你所了解的地域美食，比如{'肠粉':{'城市':'广州','原料':'米'}}。当然，你可以做的更丰富一些。 最后遍历你熟悉的美食，打印出，类似如下的句子：“肠粉是广州的一种美食，它的主要原料是米”。"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "肠粉是广州的一种美食，它的主要原料是米\n",
+      "\n",
+      "烩面是郑州的一种美食，它的主要原料是面条\n",
+      "\n",
+      "胡辣汤是郑州的一种美食，它的主要原料是牛肉、面粉\n"
+     ]
+    }
+   ],
+   "source": [
+    "food={}\n",
+    "food['肠粉']={'城市':'广州','原料':'米'}\n",
+    "food['烩面']={'城市':'郑州','原料':'面条'}\n",
+    "food['胡辣汤']={'城市':'郑州','原料':'牛肉、面粉'}\n",
+    "\n",
+    "for keys,values in food.items():\n",
+    "    print('\\n{0}是{1}的一种美食，它的主要原料是{2}'.format(keys,values['城市'],values['原料']))"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.4"
+  },
+  "toc": {
+   "base_numbering": 1,
+   "nav_menu": {},
+   "number_sections": false,
+   "sideBar": true,
+   "skip_h1_title": false,
+   "title_cell": "Table of Contents",
+   "title_sidebar": "Contents",
+   "toc_cell": false,
+   "toc_position": {
+    "height": "calc(100% - 180px)",
+    "left": "10px",
+    "top": "150px",
+    "width": "309.933px"
+   },
+   "toc_section_display": true,
+   "toc_window_display": false
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}