On 14/10/2019 21:55, DL Neil via Python-list wrote:
Is there a technique or pattern for taking a (partially-) populated
instance of a class, and re-creating it as an instance of one of its
sub-classes?
In a medically-oriented situation, we have a Person() class, and start
collecting information within an instance (person = Person(), etc).
During the data-collection process the person's sex may become obvious,
eg few males have become/been pregnant.
We could stick with Person() and implement specific methods therein,
rather than separate Man and Woman sub-classes, but...
It seemed better (at the design-level) to have Man( Person ) and Woman(
Person ) sub-classes to contain the pertinent attributes, source more
detailed and specific questions, and collect such data; by gender.
Knowing a lot of Trans people as I do, may I gently suggest that this
solution will find many and varied ways of coming back to bite you?
--
Rhodri James *-* Kynesim Ltd
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