Question

这是一个由Celery在Django环境中运行的python脚本。我需要创建一个问题，其余的错误＆＃39;并提出异常，以便Celery发送有关该例外的电子邮件。

这会是最好的方法吗？

for thread in thread_batch:
   try:
        obj = query_set.get(thread_id=thread['thread_id'])
        for key, value in thread.iteritems():
            setattr(obj, key, value)
        obj.unanswered = True
    except ThreadVault.DoesNotExist:
        obj = ThreadVault(**thread)
    except:
        raise Exception("There has been a unknown error in the database")
    obj.save()

Answer 1

是的，空except将捕获与ThreadVault.DoesNotExist不同的任何异常（在本例中）。但是你可以多改进你的代码。

始终尝试在try块中添加较少的代码。你的代码可能是：

for thread in thread_batch:
    try:
        obj = query_set.get(thread_id=thread['thread_id'])
    except ThreadVault.DoesNotExist:
        obj = ThreadVault(**thread)
    except:
        raise Exception("There has been a unknown error in the database")
    else:    # Note we add the else statement here.
        for key, value in thread.iteritems():
            setattr(obj, key, value)
        obj.unanswered = True
    # Since save function also hits the database
    # it should be within a try block as well.
    try:
       obj.save()
    except:
       raise Exception("There has been a unknown error in the database")

捕获其余错误的Python通用异常

1 个答案: