String concatenation

[Paul Rubin]

"Leif B. Kristensen" <junkmail at solumslekt.org> writes:
> >   tmp = [x for x in res if x and x[0] != '-']
> >   return ', '.join(tmp)
> 
> Substituting tmp with the real thing, it turns into a one-liner:
> 
> return ', '.join([x for x in res if x and x[0] != '-'])
> 
> Awesome :-)

Yeah, I wrote it that way at first, but figured it was obscure enough
already if you weren't used to list comprehensions, so I put back the
tmp variable.