248 lines
8.9 KiB
Python
248 lines
8.9 KiB
Python
# ==============================================================================
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# 通过 D:\文档\电子文档\个人\脚本库\PythonScript\第5章.py + 题号 运行
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# 程序名：
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# 第5章习题
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# 目的:
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#
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# 修订记录:
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# 日期 编程者 改动描述
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# =================== ============= =====================================
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# 2021-07-23 15:52:52 Sola 5-1 简化dateconvert2，格式化时间输出
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# 2021-07-23 15:57:01 Sola 5-2 分数等级转化
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# 2021-07-23 16:29:47 Sola 5-3 百分制分数等级转化
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# 2021-07-23 16:30:00 Sola 5-4 获取短语缩写
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# 2021-07-23 16:44:47 Sola 5-5 计算输入单个名字的数值
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# 2021-07-23 16:49:19 Sola 5-6 计算所有名字的数字之和
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# 2021-07-23 17:02:26 Sola 5-7 简单基于Unicode的凯撒密码
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# 2021-07-23 17:15:16 Sola 5-8 真正的凯撒密码
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# 2021-07-23 17:53:11 Sola 5-9 计算用户输入句子的单词数
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# 2021-07-23 21:59:33 Sola 5-10 计算输入句子中单词的平均长度
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# 2021-07-23 22:04:15 Sola 5-11 第1章 chaos.py 改进版本
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# 2021-07-23 22:22:38 Sola 5-12 第二章算终值改进版本
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# 2021-07-23 22:23:03 Sola 5-13 ？
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# 2021-07-23 22:23:15 Sola 5-14 统计文件的行数、单词数和字符数
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# 2021-07-23 23:21:10 Sola 5-15 学生成绩统计表
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# 2021-07-23 23:21:28 Sola 5-16 数字频数统计表
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#
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# module start
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# from graphics import * # 引入图形库
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from os import times
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def test5_1():
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# get the date
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dateStr = input("Enter a date (mm/dd/yyyy): ")
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# split into components
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monthStr, dayStr, yearStr = dateStr.split("/")
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# convert monthStr to the month name
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months = ["January", "February", "March", "April",
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"May", "June", "July", "August",
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"September", "October", "November", "December"]
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monthStr = months[int(monthStr)-1]
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# output result in month day, year format
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print("The converted date is: {0} {1}, {2}".format(monthStr, dayStr, yearStr))
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def test5_2():
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score = int(input("请输入你的分数："))
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grade = ["F", "E", "D", "C", "B", "A"]
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result = grade[score]
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print("你的分数对应的等级为：{0}".format(result))
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def test5_3():
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score = int(float(input("请输入你的分数：")) / 10)
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grade = ["F", "F", "F", "F", "F", "F", "D", "C", "B", "A", "A"]
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result = grade[score]
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print("你的分数对应的等级为：{0}".format(result))
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def test5_4():
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inputStr = input("请输入一个短语：")
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shortName = ""
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for i in inputStr.split():
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shortName = shortName + i[0].upper()
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print("'{0}' 的缩写为：{1}".format(inputStr, shortName))
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def test5_5():
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name = input("请输入单个名字：").lower()
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sum = 0
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for i in name:
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sum = sum + ord(i) - 96
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print("{0} 的数值为：{1}".format(name, sum))
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def test5_6():
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name = input("请输入你的名字：").lower()
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sum = 0
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for i in name.split():
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for j in i:
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sum = sum + ord(j) - 96
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print("{0} 的数值为：{1}".format(name, sum))
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def test5_7():
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char = input("请输入需要加密的密文：")
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key = int(input("请输入密文的偏移位数："))
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def code(char, key):
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coding = ""
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for ch in char:
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coding = coding + chr(ord(ch) + key)
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return coding
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coding = code(char, key)
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print("{0} 编码后的密文为：{1}".format(char, coding))
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key = int(input("请输入密钥："))
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decoding = code(coding, -key)
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print("{0} 解码后的明文为：{1}".format(coding, decoding))
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def test5_8():
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char = input("请输入需要加密的密文：")
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key = int(input("请输入密文的偏移位数："))
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def code(char, key):
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keyList = "abcdefghijklmnopqrstuvwxyz"
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coding = ""
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for ch in char:
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if ord(ch) <= ord("z") and ord(ch) >= ord("a"):
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coding = coding + keyList[(ord(ch) + key - ord("a")) % 26]
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elif ord(ch) <= ord("Z") and ord(ch) >= ord("A"):
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coding = coding + keyList[(ord(ch) + key - ord("A")) % 26].upper()
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else:
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coding = coding + ch
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return coding
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coding = code(char, key)
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print("{0} 编码后的密文为：{1}".format(char, coding))
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key = int(input("请输入密钥："))
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decoding = code(coding, -key)
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print("{0} 解码后的明文为：{1}".format(coding, decoding))
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def test5_9():
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inputSentence = input("请输入需要统计的句子：")
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num = 0
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for ch in inputSentence.title():
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if ord(ch) <= ord("Z") and ord(ch) >= ord("A"):
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num = num + 1
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print("输入语句 {0} 中有 {1} 个单词".format(inputSentence, num))
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def test5_10():
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inputSentence = input("请输入需要统计的句子：")
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num = 0
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long = 0
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for ch in inputSentence.title():
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if ord(ch) <= ord("Z") and ord(ch) >= ord("A"):
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num = num + 1
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for ch in inputSentence.lower():
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if ord(ch) <= ord("z") and ord(ch) >= ord("a"):
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long = long + 1
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print("输入语句 {0} 中每个单词的平均长度为 {1:2.1f}".format(inputSentence, long / num))
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def test5_11():
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inputList = input("请输入两个初始值（用逗号分隔）：").split(",")
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init1, init2 = float(inputList[0]), float(inputList[1])
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times = int(input("请输入迭代次数："))
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print("index {0:^8.2f} {1:^8.2f}\n------------------------------".format(init1, init2))
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for i in range(times):
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init1 = 3.9 * init1 * (1 - init1)
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init2 = 3.9 * init2 * (1 - init2)
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print("{0:<5} {1:8.6f} {2:8.6f}".format(int(i) + 1, init1, init2))
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def test5_12():
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print("This program calculates the future value of a investment.")
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principal = eval(input("Enter the principal: "))
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years = eval(input("Enter the number of years of your investment: "))
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apr = eval(input("Enter the annual interest rate: "))
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print("Year {0:^8}\n----------------".format("Value"))
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print("{0:<4} ${1:>7.2f}".format(0, principal))
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for i in range(years):
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principal = principal * (1 + apr)
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print("{0:<4} ${1:>7.2f}".format(i + 1, principal))
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def test5_13():
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print("？？？不玩了不玩了，没意思，再见吧您嘞！")
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def test5_14():
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from tkinter.filedialog import askopenfilename
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print("请选择需要统计的文件：")
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inputFileName = askopenfilename()
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inputFile = open(inputFileName, 'r')
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print("成功打开文件：{0}".format(inputFileName))
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numLines = len(inputFile.readlines())
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print("文件中共有句子 {0} 行".format(numLines))
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numWords = 0
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numChs = 0
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inputFile = open(inputFileName, 'r')
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for ch in inputFile.read().title():
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if ord(ch) <= ord("Z") and ord(ch) >= ord("A"):
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numWords = numWords + 1
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numChs = numChs + 1
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print("文件中共有单词 {0} 个".format(numWords))
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print("文件中共有字符 {0} 个".format(numChs))
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def test5_15():
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# 4
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# Computewell, 90
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# Dibblebit, 60
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# Jones, 80
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# Smith, 70
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from tkinter.filedialog import askopenfilename
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from graphics import GraphWin, Text, Rectangle, Point
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print("请选择输入的文件记录：")
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inputFile = open(askopenfilename(), 'r')
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print("成功打开文件！")
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numStudents = int(inputFile.readline())
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win = GraphWin("学生考试成绩", 800, numStudents * 30)
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for i in range(numStudents):
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infoList = inputFile.readline().split(",")
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Text(Point(95, 15 + 30 * i), infoList[0]).draw(win)
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Rectangle(Point(200, 7 + 30 * i), Point(200 + 590 * float(infoList[1]) / 100, 23 + 30 * i)).draw(win)
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win.getMouse()
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def test5_16():
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# 0
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# 1
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# 2
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# 2
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# 4
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# 4
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# 4
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# 5
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# 5
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# 5
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# 5
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# 6
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# 6
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# 6
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# 6
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# 6
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# 7
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# 7
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# 7
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# 7
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# 7
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# 7
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# 7
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# 8
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# 8
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# 8
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# 9
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# 9
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# 9
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# 10
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# 10
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from tkinter.filedialog import askopenfilename
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from graphics import GraphWin, Text, Rectangle, Point
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print("请选择输入的文件记录：")
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numList = open(askopenfilename(), 'r').readlines()
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print("成功打开文件！")
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timesList = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
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for i in numList:
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timesList[int(i)] = timesList[int(i)] + 1
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win = GraphWin("数字统计", 440, 300)
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numMax = max(timesList)
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num = 0
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for i in timesList:
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Text(Point(20 + 40 * num, 285), num).draw(win)
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Rectangle(Point(10 + 40 * num, 270), Point(30 + 40 * num, 270 - 260 * i / numMax)).draw(win)
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num = num + 1
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win.getMouse()
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import sys
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def run(num):
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eval("test5_" + num + "()")
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run(sys.argv[1]) |