Customized Default Exception Handling

Ignition
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1

I have always wondered about customizing the default exception handling when in the perspective context.... Can someone tell me why this is a bad idea?

Something akin to:

import sys

# If perspective scripting is available in this context
if hasattr(system, 'perspective'):
    sys.excepthook = lambda type, exception, traceback : myFunctionToShowUserError(type, exception, traceback)

@pturmel I feel like you'd know this for Vision, maybe the answer applies in Perspective as well.

2 Likes
2

To note, in my efforts, I haven’t got my exact example to work how I am expecting it.

However I know its possible if I dig around enough! Just need to find the right type of exception to override… lol

3

Well, even if this works, it won’t just be Perspective, it’ll be everything on the gateway. Possibly isolated to within a particular project’s “script manager”?

4

Well, everything Jython. I wouldn't expect it to catch Java exceptions.