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Re: Read-only attribute in module

From Terry Reedy <tjreedy@udel.edu>
Subject Re: Read-only attribute in module
Date 2012-02-10 17:29 -0500
References <CABUeae_vv=THd0VLsAteEKu7z8U2KA4p+vK1a=nAeMSKzM-L7g@mail.gmail.com> <jh161s$kqp$1@dough.gmane.org> <1328872312611-4382967.post@n6.nabble.com>
Newsgroups comp.lang.python
Message-ID <mailman.5684.1328913015.27778.python-list@python.org> (permalink)

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On 2/10/2012 6:11 AM, mloskot wrote:

> The intent of xyz.flag is that it is a value set by the module internally.
> xyz is a module wrapping a C library.
> The C library defines concept of a global flag set by the C functions at
> some events,
> so user can check value of this flag.
> I can provide access to it with function: xyz.get_flag()

If the value of the flag can change during a run, I would do that. 
Otherwise, you have to make sure the local copy keeps in sync. Users 
might also think that it is a true constant that they could read once.

I understand that you might be concerned that one person in a 
multi-programmer project might decide to rebind xyz.flag and mess up 
everyone else. I think the real solution might be an option to freeze an 
entire module.

-- 
Terry Jan Reedy

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Re: Read-only attribute in module Terry Reedy <tjreedy@udel.edu> - 2012-02-10 17:29 -0500

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