05-while-函数.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "hi\n"
     ]
    }
   ],
   "source": [
    "for i in range(1,10):\n",
    "    pass # 里面至少有一句,不然会报错\n",
    "else:\n",
    "    print(\"hi\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n"
     ]
    }
   ],
   "source": [
    "i = 0\n",
    "while i<5:\n",
    "    print(i)\n",
    "    i=i+1\n",
    "   "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "你存入的本金:1000\n",
      "你的在1年,本息共1067.0\n",
      "你的在2年,本息共1138.489\n",
      "你的在3年,本息共1214.767763\n",
      "你的在4年,本息共1296.157203121\n",
      "你的在5年,本息共1382.999735730107\n",
      "你的在6年,本息共1475.6607180240242\n",
      "你的在7年,本息共1574.5299861316337\n",
      "你的在8年,本息共1680.023495202453\n",
      "你的在9年,本息共1792.5850693810173\n",
      "你的在10年,本息共1912.6882690295454\n",
      "你的在11年,本息共2040.838383054525\n",
      "你的钱在11年将翻倍\n"
     ]
    }
   ],
   "source": [
    "init = int(input(\"你存入的本金:\"))\n",
    "s = 2 * init\n",
    "y = 0\n",
    "while init < s:\n",
    "    init = init * (1+0.067)\n",
    "    y +=1\n",
    "    print(\"你的在{0}年,本息共{1}\".format(y,init))\n",
    "print(\"你的钱在%d年将翻倍\"%y)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 函数\n",
    " - 函数的作用\n",
    " - 函数的使用:\n",
    "     - 先定义\n",
    "     "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "finished\n"
     ]
    }
   ],
   "source": [
    "def func():\n",
    "    print(\"function is worked\")\n",
    "print(\"finished\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 31,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "function is worked\n"
     ]
    }
   ],
   "source": [
    "func()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "我要对你说love you\n"
     ]
    }
   ],
   "source": [
    "def sayHi(what):\n",
    "    print(\"我要对你说%s\"%what)\n",
    "sayHi(\"love you\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "love you\n"
     ]
    }
   ],
   "source": [
    "def func1():\n",
    "    return \"love you\"\n",
    "    print(\"会执行到这一步吗?\")\n",
    "s = func1()\n",
    "print(s)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " 1 X  1 =  1 \n",
      " 2 X  1 =  2  2 X  2 =  4 \n",
      " 3 X  1 =  3  3 X  2 =  6  3 X  3 =  9 \n",
      " 4 X  1 =  4  4 X  2 =  8  4 X  3 = 12  4 X  4 = 16 \n",
      " 5 X  1 =  5  5 X  2 = 10  5 X  3 = 15  5 X  4 = 20  5 X  5 = 25 \n",
      " 6 X  1 =  6  6 X  2 = 12  6 X  3 = 18  6 X  4 = 24  6 X  5 = 30  6 X  6 = 36 \n",
      " 7 X  1 =  7  7 X  2 = 14  7 X  3 = 21  7 X  4 = 28  7 X  5 = 35  7 X  6 = 42  7 X  7 = 49 \n",
      " 8 X  1 =  8  8 X  2 = 16  8 X  3 = 24  8 X  4 = 32  8 X  5 = 40  8 X  6 = 48  8 X  7 = 56  8 X  8 = 64 \n",
      " 9 X  1 =  9  9 X  2 = 18  9 X  3 = 27  9 X  4 = 36  9 X  5 = 45  9 X  6 = 54  9 X  7 = 63  9 X  8 = 72  9 X  9 = 81 \n",
      "-------between line---------\n",
      " 9 X  1 =  9  9 X  2 = 18  9 X  3 = 27  9 X  4 = 36  9 X  5 = 45  9 X  6 = 54  9 X  7 = 63  9 X  8 = 72  9 X  9 = 81 \n",
      " 8 X  1 =  8  8 X  2 = 16  8 X  3 = 24  8 X  4 = 32  8 X  5 = 40  8 X  6 = 48  8 X  7 = 56  8 X  8 = 64 \n",
      " 7 X  1 =  7  7 X  2 = 14  7 X  3 = 21  7 X  4 = 28  7 X  5 = 35  7 X  6 = 42  7 X  7 = 49 \n",
      " 6 X  1 =  6  6 X  2 = 12  6 X  3 = 18  6 X  4 = 24  6 X  5 = 30  6 X  6 = 36 \n",
      " 5 X  1 =  5  5 X  2 = 10  5 X  3 = 15  5 X  4 = 20  5 X  5 = 25 \n",
      " 4 X  1 =  4  4 X  2 =  8  4 X  3 = 12  4 X  4 = 16 \n",
      " 3 X  1 =  3  3 X  2 =  6  3 X  3 =  9 \n",
      " 2 X  1 =  2  2 X  2 =  4 \n",
      " 1 X  1 =  1 \n",
      "-------between line---------\n",
      "                                                                                                         1 X  1 =  1 \n",
      "                                                                                            2 X  1 =  2  2 X  2 =  4 \n",
      "                                                                               3 X  1 =  3  3 X  2 =  6  3 X  3 =  9 \n",
      "                                                                  4 X  1 =  4  4 X  2 =  8  4 X  3 = 12  4 X  4 = 16 \n",
      "                                                     5 X  1 =  5  5 X  2 = 10  5 X  3 = 15  5 X  4 = 20  5 X  5 = 25 \n",
      "                                        6 X  1 =  6  6 X  2 = 12  6 X  3 = 18  6 X  4 = 24  6 X  5 = 30  6 X  6 = 36 \n",
      "                           7 X  1 =  7  7 X  2 = 14  7 X  3 = 21  7 X  4 = 28  7 X  5 = 35  7 X  6 = 42  7 X  7 = 49 \n",
      "              8 X  1 =  8  8 X  2 = 16  8 X  3 = 24  8 X  4 = 32  8 X  5 = 40  8 X  6 = 48  8 X  7 = 56  8 X  8 = 64 \n",
      " 9 X  1 =  9  9 X  2 = 18  9 X  3 = 27  9 X  4 = 36  9 X  5 = 45  9 X  6 = 54  9 X  7 = 63  9 X  8 = 72  9 X  9 = 81 \n"
     ]
    }
   ],
   "source": [
    "# 打印九九乘法表\n",
    "def multi(r,c):\n",
    "    print(\"{0:-2d} X {1:-2d} = {2:-2d}\".format(r,c,r*c),end=\" \")\n",
    "    \n",
    "def blank(n):\n",
    "    for i in range(1,n+1):\n",
    "        print(\"           \".format(r,c,r*c),end=\"  \")\n",
    "    \n",
    "for r in range(1,10):\n",
    "    for c in range(1,r+1):\n",
    "        multi(r,c)\n",
    "    print()\n",
    "\n",
    "print(\"-------between line---------\")\n",
    "for r in range(1,10):\n",
    "    for c in range(1,11-r):\n",
    "        multi(10-r,c)\n",
    "    print()\n",
    "    \n",
    "print(\"-------between line---------\")\n",
    "\n",
    "for r in range(1,10):\n",
    "    blank(9-r)\n",
    "    for c in range(1,r+1):\n",
    "        multi(r,c)\n",
    "    print()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 54,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Help on built-in function print in module builtins:\n",
      "\n",
      "print(...)\n",
      "    print(value, ..., sep=' ', end='\\n', file=sys.stdout, flush=False)\n",
      "    \n",
      "    Prints the values to a stream, or to sys.stdout by default.\n",
      "    Optional keyword arguments:\n",
      "    file:  a file-like object (stream); defaults to the current sys.stdout.\n",
      "    sep:   string inserted between values, default a space.\n",
      "    end:   string appended after the last value, default a newline.\n",
      "    flush: whether to forcibly flush the stream.\n",
      "\n"
     ]
    }
   ],
   "source": [
    "help(print)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 55,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "550\n",
      "8\n"
     ]
    }
   ],
   "source": [
    "def func(p1=10,p2=55):\n",
    "    print(p1*p2)\n",
    "func()\n",
    "func(2,4)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "* * * * \n",
      "*     * \n",
      "*     * \n",
      "* * * * \n"
     ]
    }
   ],
   "source": [
    "for i in range(4):\n",
    "    for c in range(4):\n",
    "        if c!=0 and c!=3 and i!=0 and i!=3:\n",
    "            print(\" \",end=\" \")\n",
    "        else:\n",
    "            print(\"*\",end=\" \")\n",
    "    print()\n",
    "        "
   ]
  }
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