On Wed, 4 Oct 2017 14:06:48 -0400
Barry Warsaw <ba...@python.org> wrote:
> Victor brings up a good question in his review of the PEP 553 implementation.
> 
> https://github.com/python/cpython/pull/3355
> https://bugs.python.org/issue31353
> 
> The question is whether $PYTHONBREAKPOINT should be ignored if -E is given?
> 
> I think it makes sense for $PYTHONBREAKPOINT to be sensitive to -E, but in 
> thinking about it some more, it might make better sense for the semantics to 
> be that when -E is given, we treat it like PYTHONBREAKPOINT=0, i.e. disable 
> the breakpoint, rather than fallback to the `pdb.set_trace` default.

"""Special cases aren't special enough to break the rules."""

People expect -E to disable envvar-driven overrides, so just treat it
like that and don't try to second-guess the user.

Regards

Antoine.


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