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Groups > comp.lang.python > #57845
| From | random832@fastmail.us |
|---|---|
| References | <bd71ueFqcsiU1@mid.dfncis.de> |
| Subject | Re: Python3 doc, operator reflection |
| Date | 2013-10-28 14:31 -0400 |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.1711.1382985091.18130.python-list@python.org> (permalink) |
On Mon, Oct 28, 2013, at 8:00, Johannes Bauer wrote: > Hi group, > > in http://docs.python.org/3/reference/datamodel.html#customization the > doc reads: > > > There are no swapped-argument versions of these methods (to be used when the left argument does not support the operation but the right argument does); rather, __lt__() and __gt__() are each other’s reflection, __le__() and __ge__() are each other’s reflection, and __eq__() and __ne__() are their own reflection. > > But shouldn't __lt__ be the reflection or __ge__ and __gt__ the > reflection of __le__? No... a < b is b > a - you're thinking of the relationship between a < b and not(a >= b), which is not the argument-swapping it is referring to.
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Python3 doc, operator reflection Johannes Bauer <dfnsonfsduifb@gmx.de> - 2013-10-28 13:00 +0100
Re: Python3 doc, operator reflection Chris Angelico <rosuav@gmail.com> - 2013-10-28 23:23 +1100
Re: Python3 doc, operator reflection Johannes Bauer <dfnsonfsduifb@gmx.de> - 2013-10-28 13:45 +0100
Re: Python3 doc, operator reflection random832@fastmail.us - 2013-10-28 14:31 -0400
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