[Python-Dev] Negative timedelta strings

Steven D'Aprano steve at pearwood.info
Fri Mar 28 12:03:42 CET 2014


There's a furious discussion going on at the python-list mailing list, 
about negative timedelta strings:

py> str(timedelta(0, -1))
'-1 day, 23:59:59'


This is documented. It's even documented as being "somewhat unusual". I 
found a tracker item for it, back in July 2010:

http://bugs.python.org/issue9430

and that refers back to a discussion on #python-dev, but (as far as I 
know) that's not archived anywhere. I had a look on the python-dev 
mailing list around that time, and couldn't find anything.

Does anyone remember the rationale for this behaviour? Is it open to 
debate or is it now cast in stone? (Personally, I'm not looking to 
reopen the debate, and if I did, it would be on python-ideas.) Any links 
to the earlier discussion would be helpful.


Thanks,



-- 
Steve


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