[Python-Dev] Add a developer mode to Python: -X dev command line option (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Mon Nov 13 21:57:53 EST 2017

On 14 November 2017 at 02:08, Victor Stinner <victor.stinner at gmail.com> wrote:

My "-X dev" idea is not incompatible with Nick's PEP 565 "Show DeprecationWarning in main" and it's different: it's an opt-in option, while Nick wants to change the default behaviour.

I'm +1 on a -X dev mode, since it enables a lot of things that are useful for making an application more robust (extension module debugging, explicit scope-controlled resource management) that I wouldn't want turned at the REPL by default. It also implicitly adjusts over time as we add more debugging capabilities.

I don't consider it a replacement for tweaking how we handle DeprecationWarning by default, though :)

Cheers, Nick.

-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia

More information about the Python-Dev mailing list