[Python-Dev] PEP 538 warning at startup: please remove it (original) (raw)

Nathaniel Smith njs at pobox.com
Mon Jun 12 16:48:37 EDT 2017

On Jun 12, 2017 10:50, "Gregory P. Smith" <greg at krypto.org> wrote:

The problem, as with all warnings, is that it isn't the user who has control over the problem who sees the warning. It is the end use of an application on a system that sees it.

I don't think I understand the distinction you're making here. This isn't like DeprecationWarnings where python is trying to tell the application developer that they need to fix something, and the application user gets caught in the crossfire. In this case there's nothing the application developer can do – the problem is that the end user has their system misconfigured, and probably should fix their .bashrc or crontab something before running the application. Or maybe they shouldn't and python should just do its thing and it's fine. But if anyone's going to do something it would have to be the end user, right?

(I don't have an opinion on the warning itself; I'd be mildly interested to discover which of my systems are broken in this fashion but it doesn't affect me much either way. It does occur to me though that it will probably make some sysadmins extremely cranky: the ones that have crontabs with broken locales and which are set to email if their script generates any output – I think these are both still cron defaults – and who after upgrading to py37 will suddenly find copies of this warning pouring into their inboxes at a rate of hundreds per hour.)

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