Question

我正在进行一项Python编程，它要求用户提供波长值，并打印出相应电磁波谱部分的描述，如下表所示。

| Type          | Wavelength             | Frequency                |
|---------------+------------------------+--------------------------|
| Radio Waves   | 10^–3 to 10^–1         | 3 × 10^9 to 3 × 10^11    |
| Microwaves    | 10^–3 to 10^–1         | 3 × 10^9 to 3 × 10^11    |
| Infrared      | 7 × 10^–7 to 10^–3     | 3 × 10^11 to 4 × 10^14   |
| Visible Light | 4 × 10^–7 to 7 × 10^–7 | 4 × 10^14 to 7.5 × 10^14 |
| Ultraviolet   | 10^–8 to 4 × 10^–7     | 7.5 × 10^14 to 3 × 10^16 |
| X-Rays        | 10^–11 to 10^–8        | 3 × 10^16 to 3 × 10^19   |
| Gamma Rays    | < 10^–11               | > 3 × 10^19              |

现在我尝试使用多个if ifif语句来获得结果，但不知何故我得到缩进错误，我知道我在整个编码中也有些不正确。我是一名初学程序员，他正在学习Python作为一种起始语言（仅在一周前开始）。这是我一直在研究的代码。有人可以帮我提供代码吗？

wavelength = int(input('Please enter the wavelength...'))

if wavelength > 1E-1:
    frequency < 3E9, Wtype = Radio Waves

elif 1E-3 <= wavelength <= 1E-1:
    3E9 <= frequency <= 3E11, Wtype = Microwaves


elif 7E-7 <= wavelength <= 1E-1:
    3E11 <= frequency <= 4E14, Wtype = Infrared

elif 4E-7 <= wavelength <= 7E-7:
    4E14 <= frequency <= 7.5E14, Wtype = Visible Light

elif 1E-8 <= wavelength <= 4E-7:
    7.5E14 <= frequency <= 3E16, Wtype = Ultraviolet

elif 1E-11 <= wavelength <= 1E-8:
    3E16 <= frequency <= 3E19, Wtype = X-Rays



elif  wavelength <= 1E-11:
    frequency > 3E19, Wtype = Gamma Rays


print('Your wavelength is{0}'.format(Wtype))

更新：

我在代码上即兴创作了一些。

本，谢谢你的意见。我根据给定的要求即兴创作了代码。这里是。无论我输入什么输入，它都会提供＆＃34; Gamma Rays＆＃34;作为输出。

while True:
    wavelength = float(input('Please enter the wavelength...'))



    if 1E-3 <= wavelength <= 1E-1:
        Wtype = 'Radio Waves'

    elif 1E-3 <= wavelength <= 1E-1:
        Wtype = 'Microwaves'


    elif 7E-7 <= wavelength <= 1E-1:
        Wtype = 'Infrared'

    elif 4E-7 <= wavelength <= 7E-7:
        Wtype = 'Visible Light'

    elif 1E-8 <= wavelength <= 4E-7:
        Wtype = 'Ultraviolet'

    elif 1E-11 <= wavelength <= 1E-8:
        Wtype = 'X-Rays'

    elif  wavelength >= 1E-11:
        Wtype = 'Gamma Rays'


    print('Your wavelength is {0}'.format(Wtype))

Answer 1

您的代码存在一些问题：

3E9 <= frequency <= 3E11, Wtype = Microwaves;使用;，而非,分隔行
Wtype = Microwaves;你从未定义Microwaves，所以这也会引发错误。您必须使Microwaves等于'Microwaves'，或者更简单地将Wtype = 'Microwaves'（字符串必须包含在" "或' '中）

我将代码修改为它的工作原理：

while True:
wavelength = float(input('Please enter the wavelength: '))



if 1E-3 <= wavelength <= 1E-1:
    Wtype = 'Radio Waves'

elif 1E-3 <= wavelength <= 1E-1:
    Wtype = 'Microwaves'


elif 7E-7 <= wavelength <= 1E-1:
    Wtype = 'Infrared'

elif 4E-7 <= wavelength <= 7E-7:
    Wtype = 'Visible Light'

elif 1E-8 <= wavelength <= 4E-7:
    Wtype = 'Ultraviolet'

elif 1E-11 <= wavelength <= 1E-8:
    Wtype = 'X-Rays'

elif  wavelength >= 1E-11:
    Wtype = 'Gamma Rays'


print('Your wavelength is {0}'.format(Wtype))

这是一个测试运行：

>>> Please enter the wavelength: 0.8798798789                                                                                                                     
Your wavelength is Gamma Rays                                                                                                                                 
>>> Please enter the wavelength: 0.0000000005                                                                                                                     
Your wavelength is X-Rays                                                                                                                                     
>>> Please enter the wavelength: 1E-8                                                                                                                             
Your wavelength is Ultraviolet                                                                                                                                
>>> Please enter the wavelength: 1E-11                                                                                                                            
Your wavelength is X-Rays                                                                                                                                     
>>> Please enter the wavelength: .00000300000                                                                                                                     
Your wavelength is Infrared                                                                                                                                   
>>> Please enter the wavelength: 3E-7                                                                                                                             
Your wavelength is Ultraviolet                                                                                                                                
>>> Please enter the wavelength: 4E-7                                                                                                                             
Your wavelength is Visible Light

Python如果用elif程序来计算光的波长

1 个答案: