On 03/04/2013 05:15, Steven D'Aprano wrote:
On Wed, 03 Apr 2013 02:05:31 +0100, Rotwang wrote:
Hi all,
Here's a Python problem I've come up against and my crappy solution.
Hopefully someone here can suggest something better. I want to decorate
a bunch of functions with different signatures;
[...]
After thinking about it for a while I've come up with the following
abomination:
[...]
It seems to work, but I don't like it. Does anyone know of a better way
of doing the same thing?
Wait until Python 3.4 or 3.5 (or Python 4000?) when functools.wraps
automatically preserves the function signature?
Alas, I think this is a hard problem to solve with current Python. You
might like to compare your solution with that of Michele Simionato's
"decorator" module:
http://micheles.googlecode.com/hg/decorator/documentation.html
See this for some other ideas:
http://numericalrecipes.wordpress.com/2009/05/25/signature-preserving-
function-decorators/
Good luck!
Thanks. It'll take me a while to fully absorb the links, but it looks
like both are similarly based on abusing the exec function.
Thanks to Jan too.
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