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5.3 跳转语句
跳转语句能够改变程序的执行顺序,包括break、continue和return。break和continue用于循环体中,而return用于函数中。本节先介绍break和continue语句,对于return语句,将在后面的章节中介绍。
5.3.1 break语句
break语句用于强行退出循环体,不再执行循环体中剩余的语句。
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_62_2.jpg?sign=1739208334-qeRamhNGh4Mo939jf31zkeA58V9MdM0q-0-97cf80faf3e5dc82601aa12d1e53c54a)
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_62_3.jpg?sign=1739208334-MLsGrZ9g8DUVxWguTOymOYPR4lT62bac-0-3a40080103f79d7a6e0e110c56c4b2f8)
示例代码如下:
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_63_1.jpg?sign=1739208334-QbIKbMBUpmjGWD9i18i6dMwBc1fEOkFO-0-b79e226109b9c66074fd8546b29b935c)
通过Python指令运行文件。
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_63_2.jpg?sign=1739208334-WP3zfCupnsN4UguRWTC5QCFc73dZn2FZ-0-b0782aeb75b7740ea8cbcad71167dd91)
只循环了3次,item==3之后的数据不会被打印出来
5.3.2 continue语句
continue语句用于结束本次循环,跳过循环体中尚未执行的语句,接着进行终止条件的判断,以决定是否继续循环。
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_63_3.jpg?sign=1739208334-XVXqXXmpjZd8YbmTaUz0WCodM4nCQPqg-0-3235e952669893c4a315d651e028018c)
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_63_4.jpg?sign=1739208334-YKJCqS73kz6GU0uQQrl4m7gjWXHokqtd-0-ed477d610d1ec449c8447bde832420ba)
示例代码如下:
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_64_1.jpg?sign=1739208334-NDv1StCDb1W4yXY69vz6bPRf5Yl4YciB-0-bf958fbc26eb1767a4ee8272a45de1cb)
通过Python指令运行文件。
![](https://epubservercos.yuewen.com/E31CF8/16992237404787606/epubprivate/OEBPS/Images/38839_64_2.jpg?sign=1739208334-TevzCSyCZOdTwlQXsAMHPMyANVTMoht1-0-d08660f49dc7295fb767763263ca6e07)
注意:在输出结果中没有3