[Python-3000] PEP 30xx: Access to Module/Class/Function CurrentlyBeing Defined (this)

Nicko van Someren nicko at nicko.org
Sat Apr 28 18:14:41 CEST 2007

On 23 Apr 2007, at 05:17, Terry Reedy wrote:

> "Jim Jewett" <jimjjewett at gmail.com> wrote in
> message  
> news:fb6fbf560704222005le4798a4j5daa5e71e644f069 at mail.gmail.com...
> |    Functions (including methods) often want access to themselves,
> |    usually for a private storage location.
> Or for true recursion.  At present, a function has to 'hope' that its
> definition name is not rebound.

Indeed.  It's much clearing than having to write:
	Y = lambda f: partial(f,f)
	fac = Y(lambda f, n: n*f(f,n-1) if n>0 else 1)

Seriously though, while I have to confess never, ever having found  
rebinding of function names a limiting factor in writing recursive  
code I'm still in favour of the proposal.  Personally I think  
function-local storage is a more likely use.


More information about the Python-3000 mailing list