Le 04/12/2017 à 14:16, Steven D'Aprano a écrit :
We're taking something which belongs in the report generator or
collection, the knowledge of how to sort a collection of unordered
values, and baking it into the values themselves. (Effectively making
them ordered!)
It is also possible to use this __key__ method for classes for which the
ordering
is indeed unambiguously defined, e.g.:
class MyValue:
def __init__(self, value, comment):
self.value = value
self.comment = comment
def __key__(self):
return self.value
Then it is not shocking to define a sorting key.
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