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Fri Jun 8 04:18:54 CEST 2012 · https://mail.python.org/pipermail/python-dev/2012-June/120055.html

On 06/07/2012 07:08 PM, Steven D'Aprano wrote:
> Perhaps func.__signature__ should be a computed the first time it is 
> accessed?

The PEP already declares that signatures are lazily generated.  
signature() checks to see if __signature__ is set, and if it is returns 
it.  (Or, rather, a deepcopy of it, assuming we go down that route.)  If 
__signature__ isn't set, signature() computes it and returns that.  
(Possibly caching in __signature__, possibly not, possibly caching the 
result then returning a deepcopy.)

//arry/
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Showing content from https://mail.python.org/pipermail/python-dev/2012-June/120055.html below:

[Python-Dev] Updated PEP 362 (Function Signature Object)