Read-only attribute in module

[mloskot]

Terry Reedy wrote
> 
> 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,

Thanks for your really helpful notes.

Best regards,


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Mateusz Loskot
http://mateusz.loskot.net
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