something for itertools

[Daniel Nogradi]

> > In a recent thread,
> > http://mail.python.org/pipermail/python-list/2006-September/361512.html,
> > a couple of very useful and enlightening itertools examples were given
> > and was wondering if my problem also can be solved in an elegant way
> > by itertools.
> >
> > I have a bunch of tuples with varying lengths and would like to have
> > all of them the length of the maximal and pad with None's. So
> > something like
> >
> > a = ( 1, 2, 3 )
> > b = ( 10, 20 )
> > c = ( 'x', 'y', 'z', 'e', 'f' )
> >
> > should turn into
> >
> > a = ( 1, 2, 3, None, None )
> > b = ( 10, 20, None, None, None )
> > c = ( 'x', 'y', 'z', 'e', 'f' )
> >
> > Of course with some len( ) calls and loops this can be solved but
> > something tells me there is a simple itertools-like solution.
> >
>
> Not the most readable one-liner of all times, but here it goes:
>
> a,b,c = zip(*map(None,a,b,c))
>

Thanks, that does the trick.