On Mon, 20 May 2013 06:12:41 -0700, Ethan Furman <ethan@stoneleaf.us> wrote:
As a quick reminder, PEP 409 allows this:
try: ... except AnError: raise SomeOtherError from None
so that if the exception is not caught, we get the traditional single exception traceback, instead of the new:
During handling of the above exception, another exception occurred
My question:
How do we go about putting this in the stdlib? Is this one of the occasions where we don't do it unless we're modifying a module already for some other reason?
For that matter, should we?
Pros: Makes tracebacks much less confusing, especially coming from a library
Cons: Could hide bugs unrelated to what is being caught and transformed
I'm pretty sure the answer is "almost never". I think a case needs to be made for any place that seems like it would actually improve things, because usually I don't think it will, in the stdlib. --David