Python的try except:别让异常杀死你的程序,留条活路
在你执行大型程序之际, 忽然出现, 会致使程序径直停止, 这般对于服务器自动程序而言很不友善, 然而具备较好的异常捕获机制, 不会马上终止程序。这个机制就是try-。1. 发生异常时可配置备用程序aa 1,2,4,5,7,0,2for ii in aa:try:h 2/iiprint(h): #发生异常时备用h 2/(ii1)print(h)2. 单个异常捕获dict_ {}try:print(dict_test打出, 引号括起来的, 三个点, 中间夹着两个减号, 再用引号括起来的值。as e:输出引号内内容: “--- the error is ---:”, 异常对象 e #针对单个异常的情况。print( ---!!--- )3. 多个异常捕获循环中num 9,7,0,1,4,16for x in num:try:print (1/x):print(error0做除数): # 当报错信息为执行下面的语句。打出, 引号引起来的, 错误冒号数值类型错误感叹号。print( ---!!--- )4. 有这么一种情况, 当你对异常的具体种类并不清楚, 或者不确定会出现多少种异常时, 能够运用通用异常捕获, 同时呢, 通用异常还能够和特定异常混合使用, 这被称作通用异常。num 9,7,0,1,4,16for x in num:try:print (1/x):执行print(error: 0做除数) , 这涉及特定异常以及混合使用的情况, 是这样的一种操作 , 是这般的一种情形 , 是如此的一种状况。as e:print(the is:,e)print( ---!!--- )5. else语句在被检测的代码块没有发生异常时执行词典等于这样一个集合, 它里面有一项, 这一项的键是字符串形式的“test”, 这一项的值是字符串形式的“这个地方是哪里? ”。try:print(dict_testprint( --- ... --- )as e:print(--- the error is ---:, e) #单个异常else:print(没有发生异常)print( ---!!--- )6. 语句不管有没有发生异常都会执行dict_ {test:这个地方是哪里}try:print(dict_testprint( --- ... --- )as e:print(--- the error is ---:, e) #单个异常else:print(没有发生异常):print(总可以被执行的语句。。。)print( ---!!--- )以上便完结了本文的所有具体内容, 期望对大家在各自学习方面存有具备的协助作用, 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2026/10/15 4:02:46 阅读更多 →

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2026/10/15 0:00:46 阅读更多 →
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2026/10/15 0:00:46 阅读更多 →

周新闻

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2026/10/14 3:30:28 阅读更多 →
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月新闻

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2026/10/15 0:14:36 阅读更多 →
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