Why no lexical scoping for a method within a class?

Bruno Desthuilliers bdesth.quelquechose at free.quelquepart.fr
Wed Dec 17 22:11:19 CET 2008


walterbyrd a écrit :
> On Dec 17, 8:41 am, prueba... at latinmail.com wrote:
> 
>> If scoping worked as you want, how, pray tell, would you define object
>> attributes?- Hide quoted text -
> 
> I suppose you could do this:
> 
> class className():
>     varname = "whatever"

This defines a class attribute - that is, an attribute of the className 
class object, accessible either thru the className object or it's 
instances if not shadowed by an instance attribute by the same name/

>     def fname(self, varname):
>        . . . .
> 
> Instead of having variable defined within methods to be global
> everywhere within the class.

There's nothing like a "variable defined within (a) method", because you 
never define methods in Python - only functions. So there's no 
difference in scoping rules for functions defined within a class 
statement block or outside a class statement block.


> Anyway, it's not a matter of what I like, I am just trying to
> understand the reason behind the scoping rules.

Then you should start with understanding the scoping rules.



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