[Python-Dev] PEP 8: Discourage named lambdas?
Leif Walsh
adlaiff6 at gmail.com
Sat May 3 20:47:27 CEST 2008
On Sat, 3 May 2008, Brett Cannon wrote:
> On Sat, May 3, 2008 at 1:03 AM, Terry Reedy <tjreedy at udel.edu> wrote:
> > Some people write
> > somename = lambda args: expression
> > instead of the more obvious (to most people) and, dare I say, standard
> > def somename(args): return expression
> >
> > The difference in the result (the only one I know of) is that the code and
> > function objects get the generic name '<lambda>' instead of the more
> > informative (in repr() output or tracebacks) 'somename'. I consider this a
> > disadvantage.
> >
> > In the absence of any compensating advantages (other than the trivial
> > saving of 3 chars), I consider the def form to be the proper Python style
> > to the point I think it should be at least recommended for the stdlib in
> > the Programming Recommendations section of PEP 8.
> >
> > There are currently uses of named lambdas at least in urllib2. This to me
> > is a bad example for new Python programmers.
> >
> > What do our style mavens think?
>
> +1.
A superfluous +1 from me too, although I will mention that lists of
lambdas have saved my butt more than a few times.
--
Cheers,
Leif
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