Python try 关键字
定义和用法
The try 关键字用于 try...except 块。它定义了一段代码块，以测试其是否包含任何错误。
您可以为不同的错误类型定义不同的块，以及在没有出错的情况下执行的块，请参阅下面的示例。
更多示例
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The except 关键字。
The finally 关键字。
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