# ==============================================================================
# 通过 D:\文档\电子文档\个人\脚本库\PythonScript\第8章.py + 题号 运行
# 程序名：
#   第8章习题
# 目的:
# 
# 修订记录:
#         日期              编程者               改动描述
# ===================   =============   =====================================
# 2021-07-29 22:27:49       Sola        8-1 ~ 8-3 略
# 2021-07-29 22:31:50       Sola        8-4 Syracuse序列
# 2021-07-29 22:55:15       Sola        8-5 素数判断
# 2021-07-29 23:23:41       Sola        8-6 找出每一个素数
# 2021-07-30 19:13:22       Sola        8-7 哥德巴赫猜想
# 2021-07-30 19:21:14       Sola        8-8 最大公约数
# 2021-07-30 20:00:17       Sola        8-9 计算燃油效率
# 2021-07-30 20:00:28       Sola        8-10 从文件读入数据，计算燃油效率
# 2021-07-30 20:18:47       Sola        8-11 加热度天、制冷度天
# 2021-07-30 20:19:01       Sola        8-12 从文件读入计算加热度天、制冷度天
# 2021-07-30 20:21:57       Sola        8-13 回归线绘制
# 2021-07-30 21:01:56       Sola        8-14 图像转灰度并保存
# 2021-07-30 21:52:08       Sola        8-15 图形转补色并保存
# 2021-07-30 21:58:42       Sola        8-16 event_loop3，增加ESC退出文本框的功能

def Test8_4():
    intNum = int(input("请输入一个正整数："))
    if intNum > 0:
        while intNum != 1:
            print("{0}, ".format(intNum), end="")
            if intNum % 2 == 0:
                intNum = intNum // 2
            else:
                intNum = 3 * intNum + 1
        print(1)
    else:
        print("警告：输入值非法！")

def Test8_5():
    def IsPrimeNum(intNum):
        # 循环到底类型
        result = True
        if intNum > 1:
            for i in range(2, intNum // 2 + 1):
                if intNum % i == 0:
                    result = False
                    break
        else:
            print("警告：输入值非法！")
            result = -1
        return result
    def IsPrimeNum1(intNum):
        # 每次循环逐步优化
        result = True
        if intNum > 1:
            i = 2
            end = intNum
            while i < end:
                if intNum % i == 0:
                    result = False
                    break
                else:
                    i = i + 1
                    end = intNum // i + 1
            print("共进行{0}次运算".format(i))
        else:
            print("警告：输入值非法！")
            result = -1
        return result
    def IsPrimeNum2(intNum):
        # 根据原理直接限定最大循环次数
        result = True
        if intNum > 1:
            for i in range(2, int(intNum ** 0.5) + 1):
                if intNum % i == 0:
                    result = False
                    break
        else:
            print("警告：输入值非法！")
            result = -1
        return result
    intNum = int(input("请输入一个大于1正整数："))
    if intNum > 1:
        if IsPrimeNum2(intNum):
            print("{0}是素数".format(intNum))
        else:
            print("{0}不是素数".format(intNum))
    else:
        print("警告：输入值非法！")

def IsPrimeNum(intNum):
    # 根据原理直接限定最大循环次数
    result = True
    if intNum > 1:
        for i in range(2, int(intNum ** 0.5) + 1):
            if intNum % i == 0:
                result = False
                break
    else:
        print("警告：输入值非法！")
        result = -1
    return result

def Test8_6():
    intNum = int(input("请输入一个正整数："))
    if int(intNum) > 1:
        print("小于{0}的素数包括：".format(intNum), end='')
        print("2", end='')
        for i in range(3, intNum + 1):
            if IsPrimeNum(i):
                print(", {0}".format(i), end='')
        print("\n")
    else:
        print("警告：输入值非法！")

def Test8_7():
    inputNum = int(input("请输入一个偶数："))
    if inputNum % 2 == 0:
        for i in range(2, inputNum // 2 + 1):
            if IsPrimeNum(i) and IsPrimeNum(inputNum - i):
                print("{0}和{1}是和为{2}的两个素数".format(i, inputNum - i, inputNum))
                break
    else:
        print("警告：输入值非偶数！")

def Test8_8():
    inputList = input("请输入两个正整数：").split(",")
    m, n = int(inputList[0]), int(inputList[1])
    while m != 0:
        n, m = m, n % m
    print("{0}和{1}的最大公约数是：{2}".format(int(inputList[0]), int(inputList[1]), n))

def Test8_9():
    mileage = float(input("请输入开始时里程表的读数："))
    mileageOld = mileage
    fuelSum = 0
    while True:
        temp = input("\n请输入当前的里程表读数和燃油使用量（空格分隔）：")
        if temp:
            infoList = temp.split()
            mileageNow, fuel = float(infoList[0]), float(infoList[1])
            print("当前路段的燃油效率为{0:.3f}MPG".format((mileageNow - mileageOld) / fuel))
            fuelSum = fuelSum + fuel
            mileageOld = mileageNow
        else:
            print("\n总路段的燃油效率为{0:.3f}MPG".format((mileageOld - mileage) / fuelSum))
            break

def Test8_10():
    from tkinter.filedialog import askopenfilename
    inputFile = open(askopenfilename())
    mileage = float(inputFile.readline())
    mileageOld = mileage
    fuelSum = 0
    while True:
        temp = inputFile.readline()
        if temp:
            infoList = temp.split()
            mileageNow, fuel = float(infoList[0]), float(infoList[1])
            print("当前路段的燃油效率为{0:.3f}MPG".format((mileageNow - mileageOld) / fuel))
            fuelSum = fuelSum + fuel
            mileageOld = mileageNow
        else:
            print("总路段的燃油效率为{0:.3f}MPG".format((mileageOld - mileage) / fuelSum))
            break

def Test8_11():
    temperatureList = input("请输入平均温度序列：").split()
    heatSum = 0
    refrSum = 0
    for i in temperatureList:
        if float(i) > 80:
            refrSum = refrSum + float(i) - 80
        elif float(i) < 60:
            heatSum = heatSum + 60 - float(i)
    print("加热度天和制冷度天分别为：{0}, {1}".format(heatSum, refrSum))

def Test8_12():
    from tkinter.filedialog import askopenfilename
    temperatureList = open(askopenfilename()).readline().split()
    heatSum = 0
    refrSum = 0
    for i in temperatureList:
        if float(i) > 80:
            refrSum = refrSum + float(i) - 80
        elif float(i) < 60:
            heatSum = heatSum + 60 - float(i)
    print("加热度天和制冷度天分别为：{0}, {1}".format(heatSum, refrSum))

def Test8_13():
    from graphics import Point, Line, Rectangle, Text, GraphWin
    win = GraphWin("绘制回归线", 400, 400)
    win.setCoords(0, 0, 400, 400)
    doneButtom = Rectangle(Point(10, 10), Point(60, 30))
    doneButtom.setFill("white")
    doneButtom.setOutline("black")
    doneButtom.draw(win)
    doneText = Text(Point(35, 20), "Done")
    doneText.draw(win)
    i = 0
    sumX, sumY, sumXY, sumX2 = 0, 0, 0, 0
    while True:
        pointTemp = win.getMouse()
        pointTemp.setFill("red")
        
        x, y = pointTemp.getX(), pointTemp.getY()
        if abs(x - 35) <= 15 and abs(y - 20) <= 10:
            if i >= 2:
                doneButtom.undraw()
                doneText.undraw()                
                averageX, averageY = sumX / i, sumY / i
                if sumX2 - i * averageX ** 2 != 0:
                    m = (sumXY - i * averageX * averageY) / (sumX2 - i * averageX ** 2)
                    Line(Point(0, averageY + m * (0 - averageX)), Point(400, averageY + m * (400 - averageX))).draw(win)
                else:
                    Line(Point(averageX, 0), Point(averageX, 400)).draw(win)
                break
            else:
                print("点位太少了！")
        else:
            pointTemp.clone().draw(win)
            i = i + 1
            sumX, sumY, sumXY, sumX2 = sumX + x, sumY + y, sumXY + x * y, sumX2 + x ** 2
    Text(Point(200, 20), "Click again to quit").draw(win)
    win.getMouse()

def Test8_14():
    from tkinter.filedialog import askopenfilename, asksaveasfilename
    from graphics import Image, GraphWin, Point, color_rgb
    imageDir = askopenfilename()
    imageFile = Image(Point(0, 0), imageDir)
    imageHeight, imageWidth = imageFile.getHeight(), imageFile.getWidth()
    win = GraphWin("图片转灰度", width=imageWidth, height=imageHeight)
    win.setCoords(-imageWidth / 2, -imageHeight / 2, imageWidth / 2, imageHeight / 2)
    imageFile.draw(win)
    size = imageHeight * imageWidth
    for i in range(0, imageWidth):
        for j in range(0, imageHeight):
            r, g, b = imageFile.getPixel(i, j)
            brightness = int(round(0.299 * r + 0.587 * g + 0.114 * b))
            imageFile.setPixel(i, j, color_rgb(brightness, brightness, brightness))
            print("\r进度：{0:6.2f}%".format((i * imageHeight + j) / size * 100), end='')
    imageFile.save(asksaveasfilename())
    win.getMouse()

def Test8_15():
    from tkinter.filedialog import askopenfilename, asksaveasfilename
    from graphics import Image, GraphWin, Point, color_rgb
    imageDir = askopenfilename()
    imageFile = Image(Point(0, 0), imageDir)
    imageHeight, imageWidth = imageFile.getHeight(), imageFile.getWidth()
    win = GraphWin("图片转灰度", width=imageWidth, height=imageHeight)
    win.setCoords(-imageWidth / 2, -imageHeight / 2, imageWidth / 2, imageHeight / 2)
    imageFile.draw(win)
    size = imageHeight * imageWidth
    for i in range(0, imageWidth):
        for j in range(0, imageHeight):
            r, g, b = imageFile.getPixel(i, j)
            imageFile.setPixel(i, j, color_rgb(255 - r, 255 - g, 255 - b))
            print("\r进度：{0:6.2f}%".format((i * imageHeight + j) / size * 100), end='')
    imageFile.save(asksaveasfilename())
    win.getMouse()

def Test8_16():
    from graphics import GraphWin, Entry, Text
    def handleKey(k, win):
        if k == "r":
            win.setBackground("pink")
        elif k == "w":
            win.setBackground("white")
        elif k == "g":
            win.setBackground("lightgray")
        elif k == "b":
            win.setBackground("lightblue")
    
    def handleClick(pt, win):
        # create an Entry for user to type in
        entry = Entry(pt, 10)
        entry.draw(win)
        # Go modal: loop until user types <Enter> key
        while True:
            key = win.getKey()
            if key == "Return":
                entry.undraw()
                typed = entry.getText()
                Text(pt, typed).draw(win)
                # clear (ignore) any mouse click that occurred during text entry
                win.checkMouse()
                break
            if key == "Escape":
                entry.undraw()
                break
            # undraw the entry and create and draw Text0

    win = GraphWin("Click and Type", 500, 500)
    # Event Loop: handle key presses and mouse clicks until the user
    # presses the "q" key.
    while True:
        key = win.checkKey()
        if key == "q": # loop exit
            break
        if key:
            handleKey(key, win)
        pt = win.checkMouse()
        if pt:
            handleClick(pt, win)
    win.close()
    
import sys
def Run(num):
    eval("Test8_" + num + "()")
Run(sys.argv[1])