如何用Python使单位米转换为厘米

如何用Python使单位米转换为厘米？

1、新建一个空白的Python文档。

2、首先初步输入代码要求计算机提示用户输入数字，并且会自动转换为里面。

但是这个是错误的，因为metres * 100不是字符串。

metres = input("Please enter the metres that you want to transfer into centimetres:")

print(metres + "m" + "=" + metres * 100 + "cm")

3、加了STR后，还是错误，因为METRES是数字，数字要和数字相乘。

metres = input("Please enter the metres that you want to transfer into centimetres:")

print(metres + "m" + "=" + str(metres * 100) + "cm")

4、metres = input("Please enter the metres that you want to transfer into centimetres:")

print(metres + "m" + "=" + str(float(metres) * 100) + "cm")

这个才是正确的，可以键入数字检查是否可以执行。

5、为了让程序观看方便，定义变量cm。

metres = input("Please enter the metres that you want to transfer into centimetres:")

cm = float(metres) * 100

print(metres + " m " + " = " + str(cm) + " cm "

6、也可以用.format()，这样修改起来会非常方便。

metres = input("Please enter the metres that you want to transfer into centimetres:")

cm = float(metres) * 100

print("{ } m = { } cm" .format(metres, cm))

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