On 04/04/13 09:07, Cameron Simpson wrote:
On 03Apr2013 14:47, Hrvoje Niksic <hrvoje.nik...@avl.com> wrote:
| On 04/03/2013 01:17 PM, Nick Coghlan wrote:
| Why would one want to be absolutely sure of getting an int?
So that arithmetic can be relied upon? If a subclass can override
the add methods etc it can look like an int, be a subclass instance
of an int, and yet not act like an int in all ways.
Python is generally a consenting adults language. If you don't trust the
subclass to actually behave like an int in ways that matter, why are you using
it?
Ultimately, something may have monkey-patched builtins int without your
knowledge, so even calling int() doesn't guarantee anything about the object
you get back.
Isn't it funny how we have differences in opinion on just when and how we're
allowed to shoot ourselves in the foot? I personally hate the idea that global
constants aren't constant, and can be rebound by anything, but others
apparently don't care. You hate the idea that int() might return an instance of
a subclass, and I think that's a feature, not a bug.
--
Steven
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