Inline Conditionals?

[Robert Brewer]

Alex Martelli wrote:
> Antoon Pardon <apardon at forel.vub.ac.be> wrote:
>    ...
> > When using list comprehension not having a ternary operator can be
> > a PITA. It is of course possible I miss something but how am I
> > supposed to do the following:
> > 
> >    [ x.property ? foo(x) : bar(x) for x in Somelist ]
> 
> If you HAVE to use an LC by doctor's order, the above effect might be
> obtained by coding something like:
> 
> [  (bar,foo)[bool(x.property)](x) for x in Somelist ]
> 
> If your physician should relent and let you code normal 
> Python, though,
> 
> aux = []
> for x in Somelist:
>     if x.property:
>         aux.append(foo(x))
>     else
>         aux.append(foo(x))
> 
> would be vastly more readable; "sparse is better than dense" 
> and any LC
> is far too dense to be Pythonic here.

Case in point: it makes it *vastly* easier to see the typo. What
happened to bar()?

But you planned that so someone else could deliver the punch line,
didn't you? ;)


Robert Brewer
MIS
Amor Ministries
fumanchu at amor.org