[Python-Dev] comprehension abbreviation (was: Adding any() and
eric.nieuwland at xs4all.nl
Mon Mar 14 13:42:29 CET 2005
Gareth McCaughan wrote:
> I'd like it, and my reason isn't "just to save typing".
> There are two reasons.
> 1 Some bit of my brain is convinced that [x in stuff if condition]
> is the Right Syntax and keeps making me type it even though
> I know it doesn't work.
> 2 Seeing [x for x in stuff if condition] triggers my internal
> duplicated-stuff alarm, and it's distracting, in the same sort
> of way as it's distracting in C or C++ seeing
The full syntax is:
[ f(x) for x in seq if pred(x) ]
being allowed to write 'x' instead of 'identity(x)' is already a
shortcut, just as dropping the conditional part.
Remember we're doing set theory stuff here. IMHO we should follow its
notation conventions as much as we can.
More information about the Python-Dev