Message 281500 - Python tracker

Message281500

Author	barry
Recipients	Rosuav, barry, docs@python, ezio.melotti, lelit, mrabarnett, nedbat, serhiy.storchaka
Date	2016-11-22.19:10:59
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1479841859.21.0.28946334616.issue28450@psf.upfronthosting.co.za>
In-reply-to

Content
I disagree that the documentation is at fault. This is known to break existing code, e.g. http://bugs.python.org/msg281496 I think it's not correct to change the documentation but leave the error-raising behavior for 3.6 because the deprecation was never documented in 3.5 so this will look like a gratuitous regression. issue27030 for reference. I also question whether it makes sense for such escapes to be illegal in the repl argument of re.sub(). I could understand for this limitation in the pattern argument, but that's not what's causing the error.

Content

I disagree that the documentation is at fault.  This is known to break existing code, e.g. http://bugs.python.org/msg281496

I think it's not correct to change the documentation but leave the error-raising behavior for 3.6 because the deprecation was never documented in 3.5 so this will look like a gratuitous regression.  issue27030 for reference.

I also question whether it makes sense for such escapes to be illegal in the repl argument of re.sub().  I could understand for this limitation in the pattern argument, but that's not what's causing the error.

History
Date	User	Action	Args
2016-11-22 19:10:59	barry	set	recipients: + barry, nedbat, ezio.melotti, mrabarnett, docs@python, Rosuav, serhiy.storchaka, lelit
2016-11-22 19:10:59	barry	set	messageid: <1479841859.21.0.28946334616.issue28450@psf.upfronthosting.co.za>
2016-11-22 19:10:59	barry	link	issue28450 messages
2016-11-22 19:10:59	barry	create