[1,2,3] exactly same as [1,2,3,] ?

Roy Smith roy at panix.com
Fri Aug 29 11:11:41 EDT 2008


In article <QOCdnfa_yarxliXVnZ2dnUVZ_i2dnZ2d at posted.visi>,
 Grant Edwards <grante at visi.com> wrote:

> On 2008-08-29, Roy Smith <roy at panix.com> wrote:
> 
> > Exactly.  This is one of those little pieces of syntactic
> > sugar which makes python so nice to work with.  The
> > alternative is (in C, for example) abominations like this:
> >
> > const char* l[] = {"foo"
> >                  , "bar"
> >                  , "baz"
> >                  };
> >
> > and even those are not quite as good because you still have to
> > special-case the first entry.
> 
> It's probably a spec violation, but I've never seen a C
> compiler that objected to a comma after the last item in an
> initializer list.  (At least not at the warning levels I use,
> which tend to be on the picky side.)

Yowza, you're right (at least for the one case I tried).  This must be a 
new development (where "new development" is defined as, "It wasn't legal in 
the original K&R C I learned when I was a pup").

Still, I have seem people do that in code.



More information about the Python-list mailing list