[Python-Dev] Conditional For Statements

[Isaac Morland]

On Sun, 18 May 2008, Ryan Hitchman wrote:

> I'd like to propose an addition to the for statement's syntax:
>
> for {variable} in {iterable} if {condition}:
>    {block}
>
> which is equivalent to
>
> for {variable} in {iterable}:
>    if not {condition}:
>        continue
>    {block}
>
> and
>
> for {variable} in filter(lambda: {condition}, iterable):
>    {block}
>
> This would make the syntax closer to that of generators, which have
> 'for variable in iterable if condition', and would improve code
> clarity by increased brevity and not negating boolean expressions.

http://mail.python.org/pipermail/python-dev/2006-May/065090.html

This was proposed and rejected before, after which it was again proposed 
and rejected.  I think it was also proposed and rejected sometime in 2007, 
but I can't seem to find it in the archives so my memory may be faulty.

The idea is apparently not dead yet.  Hang around a couple of minutes, 
though.  It won't be long.

Isaac Morland			CSCF Web Guru
DC 2554C, x36650		WWW Software Specialist