It didn't really crash, it found an assert statement. So if you look at the bottom of the function, you'll see that, in fact, I checked for that.
其实程序并没崩溃,它只是碰到一个断言语句然后停了下来,如果你看看函数的顶部,你会看到,实际上我断定计数器。
I'd last time talked about the two assert statements.
上节课我们已经探讨了,这两个断言语句。
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