使用Python的单位转换

Question

我在Ex-5学习练习中正在艰难地学习Python，>

尝试编写一些将英寸和磅转换为厘米和公斤的变量。不要只输入测量值。用Python计算数学。

到目前为止，我已经做到了：

inches = 1
centimeters = 1
convert = centimeters * 2.54
print inches
print centimeters 
print "1 inch is %s centimeters." % convert
现在将显示1英寸的转换，我将如何对其进行更改，以便用户输入以英寸或厘米为单位的金额，并且可以正确显示转换？

而且我是否正确地认为，要成功地转换值，我将不得不手动输入值，或者是否有办法在Python中完成此操作？

[我正在艰苦学习Python，在Ex-5学习练习中，它指出，尝试编写一些将英寸和磅转换为厘米和公斤的变量。不要只输入...

Answer 1

您可以使用词典查找指定的单位：

Answer 2

正确的方法是对单位使用pint或类似的库：

Answer 3

您可以使用input()方法（包装在float()方法中以将数据转换为整数

Answer 4

name = "Bob Jones"
age = 39
height = 74 # in inches
height_in_cm = height * 2.54
weight = 220 # in pounds
weight_in_kg = weight * 0.453592
eyes = "blue"
teeth ="white"
hair = "light brown"

print(f"Let's talk about {name}.")
print(f"He's {height} inches tall which is roughly {round(height_in_cm)} centimeters.")
print(f"He weighs {weight} pounds which is about {round(weight_in_kg)} kilograms.")
print(f"Actually, that's his target weight after six months of intermittent fasting.")
print(f"He's got {eyes} eyes and {hair} hair.")
print(f"His teeth are usually {teeth} depending on how much coffee he drinks.")