python - How can I catch multiple exceptions in one line? (in the ...
Does using the 'catch, when' feature make exception handling faster because the handler is skipped as such and the stack unwinding can happen much earlier as when compared to handling the specific use cases within the handler?
Both constructs (catch () being a syntax error, as sh4nx0r rightfully pointed out) behave the same in C#. The fact that both are allowed is probably something the language inherited from C++ syntax. , can throw objects that do not derive from System.Exception. In these languages, catch will handle those non-CLS exceptions, but catch (Exception) won't.
One related and confusing thing to know is that in a try- [catch]-finally structure, a finally block may throw an exception and if so, any exception thrown by the try or catch block is lost. That can be confusing the first time you see it.
try { WebId = new Guid(queryString["web"]); } catch (FormatException) { WebId = Guid.Empty; } catch (OverflowException) { WebId = Guid.Empty; } Is there a way to catch both exceptions and only set WebId = Guid.Empty once? The given example is rather simple, as it's only a GUID, but imagine code where you modify an object multiple times, and if one of the manipulations fails as expected, you ...
I think that this only works if you raise and then catch the exception, but not if you try getting the traceback before raising an exception object that you create, which you might want to do in some designs.
Is it possible to store desired exceptions in an iterable, and then catch the iterable? I'm trying to turn a list of warnings into errors using warnings.filterwarnings, and I don't want to have to specify the list of warnings twice.
How do I raise an exception in Python so that it can later be caught via an except block?