102 lines
4.2 KiB
Python
102 lines
4.2 KiB
Python
# ==============================================================================
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# 通过 D:\文档\电子文档\个人\脚本库\PythonScript\第2章.py + 题号 运行
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# 程序名：
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# 第2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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# 2021-07-20 21:29:18 Sola 2-1 介绍呗
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# 2021-07-20 21:29:30 Sola 2-2 介绍完不自动退出
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# 2021-07-20 21:29:42 Sola 2-3 计算平均分
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# 2021-07-20 21:29:54 Sola 2-4 计算5次华氏度
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# 2021-07-20 21:30:22 Sola 2-5 计算0~100℃对应华氏度
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# 2021-07-20 21:30:47 Sola 2-6 本金利滚利
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# 2021-07-20 21:31:11 Sola 2-7 追加利滚利
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# 2021-07-20 21:31:21 Sola 2-8 利滚利滚利(我是有极限的！)
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# 2021-07-20 21:35:18 Sola 2-9 华氏度转摄氏度
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# 2021-07-20 21:38:07 Sola 2-10 千米转英里
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# 2021-07-20 21:42:45 Sola 2-11 任意一个单位转换 略
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# 2021-07-20 21:42:59 Sola 2-12 Python计算器
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def test2_1():
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print("Hello, World! 这里我就懒得再改介绍了，怪麻烦的。")
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def test2_2():
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print("Hello, World! 这里我就懒得再改介绍了，怪麻烦的。")
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input("Press the <Enter> key to quit.")
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def test2_3():
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print("This program computes the average of two exam scores.")
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score1, score2, score3 = eval(input("Enter three scores separated by a comma: "))
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average = (score1 + score2 + score3) / 3
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print("The average of the scores is:", average)
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def test2_4():
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for i in range(5):
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celsius = eval(input("What is the Celsius temperature? "))
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fahrenheit = 9/5 * celsius + 32
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print("The temperature is", fahrenheit, "degrees Fahrenheit.")
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def test2_5():
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celsius = 0
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print("摄氏度(℃)\t华氏度(℉)")
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for i in range(11):
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fahrenheit = 9/5 * celsius + 32
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print('', celsius, "\t\t", fahrenheit)
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celsius = celsius + 10
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def test2_6():
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print("This program calculates the future value of a investment.")
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principal = eval(input("Enter the initial 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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for i in range(years):
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principal = principal * (1 + apr)
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print("The value in", years, "years is:", principal)
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def test2_7():
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print("This program calculates the future value of a investment.")
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investment = eval(input("Enter the annual investment: "))
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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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principal = investment
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for i in range(years):
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principal = principal * (1 + apr) + investment
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print("The value in", years, "years is:", principal)
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def test2_8():
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print("This program calculates the future value of a investment.")
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principal = eval(input("Enter the initial principal: "))
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years = eval(input("Enter the number of years of your investment: "))
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times = eval(input("Enter the number of interest calculations per year: "))
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apr = eval(input("Enter the annual interest rate: "))
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for i in range(years):
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for j in range(times):
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principal = principal * (1 + apr / times)
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print("The value in", years, "years is:", principal)
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def test2_9():
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fahrenheit = eval(input("What is the Fahrenheit temperature? "))
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celsius = 5/9 * ( fahrenheit - 32 )
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print("The temperature is", celsius, "degrees celsius.")
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def test2_10():
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km = eval(input("请输入千米数: "))
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print(km, "km =", 0.62 * km, "mile")
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def test2_11():
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print("太简单，略过，，，实在懒得再重写一个了")
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def test2_12():
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print("Python 交互式科学计算器")
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for i in range(100):
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expr = input("请输入算数表达式：")
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a = eval(expr)
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print(expr, "的结果为", a, "，您还可以计算", 99 - i, "次")
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import sys
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def run(num):
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eval("test2_" + num + "()")
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run(sys.argv[1]) |