Message74639
Para 1: Thank you.
Pars 2: I understand and accept your concern.
Para 3. You are right odd comparisons are the root of several problems.
Following you suggestion, let's at least add one blanket,
cover-our-asses warning at the bottom of the comparison section. Example:
"Warning: if comparisons among container members violate the usual
rules, container operations may give unexpected or anomalous results."
Possibly add "We will not try to document the various possibilities."
I think something at the bottom of lib ref/numbers, possibly pointing to
Nan != Nan (which some users will not know about), would also be a good
idea.
----
Just to finish Mark's example
>>> s = {fractions.Fraction(17,1), decimal.Decimal(17)}
>>> s-{17}
set()
Subtracting a set with one member removes two members and gives a
different answer than just removing that member. But this is more an
issue for 4087 |
|
Date |
User |
Action |
Args |
2008-10-10 18:36:26 | terry.reedy | set | recipients:
+ terry.reedy, georg.brandl, rhettinger, mark.dickinson |
2008-10-10 18:36:26 | terry.reedy | set | messageid: <1223663786.58.0.662485028695.issue4090@psf.upfronthosting.co.za> |
2008-10-10 18:36:25 | terry.reedy | link | issue4090 messages |
2008-10-10 18:36:24 | terry.reedy | create | |
|