Neil Cerutti <ne...@norwich.edu> wrote:
> > In the real-world telco benchmark for _decimal, replacing the
> > single line
> >
> > outfil.write("%s\n" % t)
> >
> > with
> >
> > outfil.write("{}\n".format(t))
> >
> > adds 23% to the runtime. I think %-style formatting should not
> > be deprecated at all.
>
> When it becomes necessary, it's possible to optimize it by
> hoisting out the name lookups.
> ...
> outfil_write = outfil.write
> append_newline = "{}\n".format
> ...
> outfil_write(append_newline(t))
> ...
Did you profile this? I did, and it still adds 22% to the runtime.
Stefan Krah
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