No, loop-and-a-half! (Re: REPEAT... UNTIL ?)

[Michele Simionato]

Greg Ewing <see_reply_address at something.invalid> wrote in message news:<3D24FAC5.3050406 at something.invalid>...
> 
> On the other hand, a situation that *is* very common is
> a loop-and-a-half, with the exit condition in the middle.
> So far, I've never seen *any* really good loop-and-a-half
> structure in any language, and I think Python has a chance
> to be truly innovative here.
> 
> The syntax I favour at the moment for Python looks like
> 
>    while:
>      line = f.readline()
>    gives line <> "":
>      do_something()
> 
> Some day I'll get around to PEPping this...

Python2.2 has already

for line in f: do_something()

where f is a file object.


-- 
Michele Simionato - Dept. of Physics and Astronomy
210 Allen Hall Pittsburgh PA 15260 U.S.A.
Phone: 001-412-624-9041 Fax: 001-412-624-9163
Home-page: http://www.phyast.pitt.edu/~micheles/