Anonymus functions revisited

[bruno modulix]

George Sakkis wrote:
> "Ron" <radam2 at tampabay.rr.com> wrote:
> 
>>On Tue, 22 Mar 2005 21:56:57 GMT, Ron <radam2 at tampabay.rr.com> wrote:
>>
>>
>>>Why should a function not create a local varable of an argument if the
>>>varable doesn't exist and a default value is given?
>>
>>ok... thought it out better. :)
>>
>>Getting a default into a function isn't the problem. Returning the
>>value to a varable that doesn't exist is.
>>
>>So then the question is ... is there a way for a function to create a
>>varable in it's parents namespace that persists after the function is
>>done?
> 
> 
> Yeap.. a simple one-liner can do the trick:
> 
> def makeVars(**nameVals):
>     sys._getframe(1).f_locals.update(nameVals)
> 
> try: b
> except NameError: print "Before makeVars: NameError"
> else: print "Before makeVars: Not NameError"
> makeVars(b=2)
> try: b
> except NameError: print "After makeVars: NameError"
> else: print "After makeVars: Not NameError"
> 

Interesting. I'll keep a copy of this one in my cookbook for further 
exploration. But I think I would use such a thing in production code.

 >>> b = 25
 >>> makeVars(b=88)
 >>> b
88


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for 
p in 'onurb at xiludom.gro'.split('@')])"