[Python-3000] Parallel iteration syntax

[Giovanni Bajo]

Greg Ewing <greg.ewing at canterbury.ac.nz> wrote:

>    for (x in iter1, y in iter2):
>      ...

Contrary to zip()/izip(), this does not easily allow further composition, as
far as I can tell. For instance:

for i,(x,y) in enumerate(izip(iter1, iter2)):
    ...

must be translated to:

for (i,x in enumerate(iter1), y in iter2):

or:

for (x in iter1, i,y in enumerate(iter2)):

both of which require one further mental step, if you're coming from:

    i = 0
    for (x in iter1, y in iter2):
      ...
      i += 1

-- 
Giovanni Bajo