[Python-Dev] Re: accumulator display syntax

[Alex Martelli]

On Wednesday 22 October 2003 05:27 am, David Eppstein wrote:
   ...
> Currently, I am using expressions like
>
> 	pos2d =
> dict([(s,(positions[s][0]+dx*positions[s][2],positions[s][1]+dy*positions[s
> ][2]))
>                for s in positions])

I _must_ be getting old -- it would never occur to me to write something
as dense and incomprehensible (and no, removing the "dict([" would not
make it much clearer).  Something like:

pos2d = {}
for s, (x, y, delta) in positions.iteritems():
    pos2d[s] = x+dx*delta, y+dy*delta

seems just  SO much clearer and more transparent to me.


Alex