如何清理此代码并使其循环回选项菜单/开始？

Question

print("Options:")
print("[P] Print Options")
print("[C] Convert from Celsius")
print("[F] Convert from Fahrenheit")
print("[M] Convert from Miles")
print("[KM] Convert from Kilometers")
print("[In] Convert from Inches")
print("[CM] Convert from Centimeters")
print("[Q] Quit")
Option1 = input("Option: ")

if Option1 == "C":
  Celsius = int(input("Celsius Temperature: "))
  F1 = float(Celsius*9//5 +32)
  print("Fahrenheit: " + str(F1))

elif Option1 == "F":
  Fahrenheit = int(input("Fahrenheit Temperature: "))
  C1 = float((Fahrenheit-32)*5//9)
  print("Celcius: " + str(C1))

elif Option1 == "M":
  Miles = int(input("Miles Distance: "))
  M1 = float((Miles//1.609))
  print("Kilometers: " + str(M1))

elif Option1 == "KM":
  Kilometers = int(input("Kilometers Distance: "))
  KM1 = float((Kilometers*1.609))
  print("Miles: " + str(KM1))

elif Option1 == "In":
  Inches = int(input("Inches: "))
  In = float((Inches*2.54))
  print("Centimeters: " + str(In))

elif Option1 == "CM":
  Centimeters = float(input("Centimeters: "))
  CM1 = float((Centimeters//2.54))
  print("Inches: " + str(CM1))

elif Option1 == "Y":
  Yard = float(input("Yard: "))
  Y1 = float((Yard//1.094))
  print("Meters: " + str(Y1))

elif Option1 == "MT":
  Meters = float(input("Meters: "))
  MT1 = float((Meters*1.094))
  print("Yard: " + str(MT1))

如何清理此代码并使其循环回选项菜单/开始？我正在设计一个简单的计算机程序来帮助你们将公制单位转换成国际单位制，你们在CSA做的任何事情都和其他英联邦国家使用相同的系统。您设计了一个程序，以生成一个要转换的软件：

1. 温度从华氏到摄氏再回到
2. 将航海里程转换为KMS并返回，
3. 转换公里到英里和返回，
4. 将厘米转换为米并返回
5. 将码转换为米并返回，
6. 将英寸转换为厘米并返回您的程序应该使用菜单驱动选项从运行的程序中选择。

Answer 1

您好，您可以通过定义一个字典并使用该字典中的值来简化代码。

您还可以使用while循环进行连续输入检查，如下面的示例所示，

您可以通过类似的方式在字典中添加更多操作（选项）：

print("Options:")
print("[P] Print Options")
print("[C] Convert from Celsius")
print("[F] Convert from Fahrenheit")
print("[M] Convert from Miles")
print("[KM] Convert from Kilometers")
print("[In] Convert from Inches")
print("[CM] Convert from Centimeters")
print("[Q] Quit")
Option1 = ''
while Option1 != 'Q':
    Option1 = input("Option: ")

    operations = {"C":{"message":"Celsius Temperature: ","formula":"float(input_value*9//5 +32)","print":"Fahrenheit: "},
                  "F":{"message":"Fahrenheit Temperature: ","formula":"float((input_value-32)*5//9)","print":"Celcius: "}}

    opt = operations.get(Option1, None)

    if opt:
        input_value = int(input(operations[Option1]['message']))
        out = eval(operations[Option1]['formula'])
        print(operations[Option1]['print'] + str(out))

Answer 2

可以使用而循环

print("Options:")
print("[P] Print Options")
print("[C] Convert from Celsius")
print("[F] Convert from Fahrenheit")
print("[M] Convert from Miles")
print("[KM] Convert from Kilometers")
print("[In] Convert from Inches")
print("[CM] Convert from Centimeters")
print("[Q] Quit")
while True:
    Option1 = input("Option: ")

    if Option1 == "C":
        Celsius = int(input("Celsius Temperature: "))
        F1 = float(Celsius*9//5 +32)
        print("Fahrenheit: " + str(F1))

    elif Option1 == "F":
        Fahrenheit = int(input("Fahrenheit Temperature: "))
        C1 = float((Fahrenheit-32)*5//9)
        print("Celcius: " + str(C1))

    elif Option1 == "M":
        Miles = int(input("Miles Distance: "))
        M1 = float((Miles//1.609))
        print("Kilometers: " + str(M1))

    elif Option1 == "KM":
        Kilometers = int(input("Kilometers Distance: "))
        KM1 = float((Kilometers*1.609))
        print("Miles: " + str(KM1))

    elif Option1 == "In":
        Inches = int(input("Inches: "))
        In = float((Inches*2.54))
        print("Centimeters: " + str(In))

    elif Option1 == "CM":
        Centimeters = float(input("Centimeters: "))
        CM1 = float((Centimeters//2.54))
        print("Inches: " + str(CM1))

    elif Option1 == "Y":
        Yard = float(input("Yard: "))
        Y1 = float((Yard//1.094))
        print("Meters: " + str(Y1))

    elif Option1 == "MT":
        Meters = float(input("Meters: "))
        MT1 = float((Meters*1.094))
        print("Yard: " + str(MT1))

您可以在此处阅读有关while loop的更多信息