Lots of errors but we've seen this error before.

很多错误，但是这条，我们之前见过。

哈佛公开课 - 计算机科学课程节选

Before I type in that expression, I get an error, right?

在我输入表达式之前，出现一个错误，对吧？

麻省理工公开课 - 计算机科学及编程导论课程节选

It caught the error, because it checked the types of the operands before it applied things and it says, I'm going to stop.

它捕捉到了错误，因为它在,进行运算之前检查了运算对象的类型,然后Python意识到，应该停止了。

麻省理工公开课 - 计算机科学及编程导论课程节选