Even though my statement said enter a number, in particular, raw input here simply takes in a set of characters and treats it as a string.

即使我的陈述说的是应该输入一个数字，实际上，这里的原始输入会被当做一个字符，的集合来提取并被当做一个字符串来对待。

youdao

It feels as though I had a string, tied here under my left rib where my heart is.

感觉就像有一根弦，系在我左边肋骨的地方，系在我心脏的地方。

youdao

Glancing at the bottom, this is pretty arbitrary, but I chose to format my string as follows: % 1f so at the bottom here I'm printing out %.1f, which quick sanity check means print just one digit after the decimal place.

看下这个底部，这个是相当随意的，但我选择把我的字符串格式化成这样：,所以在这个底部我打印输出，提醒一下，这是一个只打印出,小数点后一位的方法。

哈佛公开课 - 计算机科学课程节选