{
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  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "9d496a34-c525-47a2-bc08-a132d0295be5",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n"
     ]
    }
   ],
   "source": [
    "a=1+1\n",
    "print(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "de78dde7-2bb7-4ac3-b8bd-97c0062a279f",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "333\n"
     ]
    }
   ],
   "source": [
    "c=111+222\n",
    "print(c)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "f7fa69b1-cc2a-4460-8601-e3b5e35f3626",
   "metadata": {},
   "outputs": [],
   "source": [
    "##2.1.结构的控制"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "427f925d-5db2-4554-9502-b873b3375463",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "hello\n",
      "word\n"
     ]
    }
   ],
   "source": [
    "if False:\n",
    "    print(\"hello\")\n",
    "elif True:\n",
    "    print(\"hello\")\n",
    "    print(\"word\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "d2acf1bf-74dd-4bd0-87e3-4eff3098aee3",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "726\n"
     ]
    }
   ],
   "source": [
    "a=22*33\n",
    "print(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "23c3fe61-246b-4837-af71-31e5921b3f11",
   "metadata": {},
   "outputs": [],
   "source": [
    "## 2.2. 条件"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "70293327-4778-46ca-aff3-237c5ceef229",
   "metadata": {},
   "outputs": [
    {
     "name": "stdin",
     "output_type": "stream",
     "text": [
      "请输入一个数: 336\n"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[33;41m336是偶函数!\n"
     ]
    }
   ],
   "source": [
    "num = input(\"请输入一个数:\")\n",
    "num = int(num)\n",
    "if num % 2 == 0:\n",
    "    print(F\"\\033[33;41m{num}是偶函数!\")\n",
    "else:\n",
    "    print(F\"{num}是奇数!\")\n",
    "    "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "id": "1b2a3cd6-0065-4d1a-81b5-af43590d19d8",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "          *          \n",
      "         ***         \n",
      "        *****        \n",
      "       *******       \n",
      "      *********      \n",
      "     ***********     \n",
      "    *************    \n",
      "   ***************   \n",
      "  *****************  \n",
      " ******************* \n",
      " ********************\n",
      "  ****************** \n",
      "   ****************  \n",
      "    **************   \n",
      "     ************    \n",
      "      **********     \n",
      "       ********      \n",
      "        ******       \n",
      "         ****        \n",
      "          **         \n",
      "                     \n"
     ]
    }
   ],
   "source": [
    "r = 10\n",
    "for y in range(2*r+1):\n",
    "    for x in range(2*r+1):\n",
    "        if y>=-x+r and y>=x-r and y<x+r and y<=-x+3*r:\n",
    "            print(\"*\",end=\"\")\n",
    "        else:\n",
    "            print(\" \",end=\"\")\n",
    "    print()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "id": "847999d4-2ff3-49f5-ba16-804c067d7aa4",
   "metadata": {},
   "outputs": [
    {
     "name": "stdin",
     "output_type": "stream",
     "text": [
      "输入一个被判断的整数 2\n"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "素数\n"
     ]
    }
   ],
   "source": [
    "b = True\n",
    "num = input(\"输入一个被判断的整数\")\n",
    "num = int(num)\n",
    "for i in range(2,num):\n",
    "    if num % i ==0:\n",
    "        b = False\n",
    "        break\n",
    "    else:\n",
    "        continue\n",
    "if b:\n",
    "    print(\"素数\")\n",
    "else:\n",
    "    print(\"和数\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "id": "00b1389b-086d-4980-a98f-d08e7e3aa261",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[2, 3, 5, 7]\n"
     ]
    }
   ],
   "source": [
    "a = 100\n",
    "result = [2]\n",
    "for num in range(3,a,2):\n",
    "    for i in range(2,num):\n",
    "        if num % i ==0:\n",
    "            b = False\n",
    "            break\n",
    "        else:\n",
    "            continue\n",
    "    if b:\n",
    "        result.append(num)\n",
    "print(result)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "d0cdbeed-3c84-4f79-bec3-8969ea65dcf7",
   "metadata": {},
   "outputs": [],
   "source": []
  }
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