except (ZeroDivisionError, TypeError) as e: print(e) # Except block is optional when there is finally try: open(database) finally: close(database) # catch all errors and log it try: do_work() except: # get detail from logging module logging.exception('Exception caught!') # get detail ...
如果当try后的语句执行时发生异常,python就跳回到try并执行第一个匹配该异常的except子句,异常处理完毕,控制流就通过了整个try语句(除非在处理异常时又引发新的异常)。 如果在try后的语句里发生了异常,却没有匹配的except子句,异常将被递交到上层的try,或者到程序的最上层(这样将结束程序,并打印缺省的出错信息)。
div(1, 2)#Mutiple exception in one linetry:print(a /b)except(ZeroDivisionError, TypeError) as e:print(e)#Except block is optional when there is finallytry: open(database)finally: close(database)#catch all errors and log ittry: do_work()except:#get detail from logging modulelogging.excep...
If an exception is raised due to the code in the try block, the execution continues with the statements in the except block. So, it is up to the programmer how to handle the exception. The plain try-except block will catch any type of error. But, we can be more specific. For instan...
还可以添加更多的异常处理分支，甚至一个通用的 except 来捕获所有未指定类型的异常。 You can also add more exception-handling branches or even a generic except to catch all unspecified types of exceptions. 此外，else 和 finally 子句也可以用于扩展异常处理的功能： Additionally, the else and final...
python2.5以后,对于keyboardInterrupt和SystemExit两个异常(not real error),从Exception里移出,和Exception平级,这样当使用如下的catch_all代码时,就不比为这两个异常创建额外的处理器。 try: ... except Exception, e: #handle real errors 异常参数:异常引发后,它会被传递给异常处理器,作为附加帮助信息,一般包含...
FAILED (errors=1) 我不太明白arg 1 must be an exception type是什么意思,因为我假设我的自定义异常是一个异常类型。 为什么带有try-except的第二个版本失败了? ✅ 最佳回答: 问题是您将异常类的定义嵌套在枚举中: class Weekdays(Enum): MONDAY = 'mon' ...
try: # Your code here except IOError: # Handle I/O errors except Exception as e: # Handle other exceptions finally: # Cleanup, runs no matter what 异常是按层次结构组织的,如果发生了IOError会执行IOError的except代码,剩下的异常则交由Exception处理。理解这个层次结构可以根据需要更广泛或更具体地捕...
(1, 2) # Mutiple exception in one line try: print(a / b) except (ZeroDivisionError, TypeError) as e: print(e) # Except block is optional when there is finally try: open(database) finally: close(database) # catch all errors and log it try: do_work() except: # get detail from ...
try:do_something()except Exception:# THis will catch any exception!print("Something terrible happened") 为了合理准确的定义你的异常类,这里有一些规范与编程技巧,你可以做为参照: 必须继承 Exception类: class MyOwnError(Exception): pass 利用前面提到的BaseException.str: 它将传递给BaseException.init方法的...