[Python-Dev] PEP 463: Exception-catching expressions

Jan Kaliszewski zuo at chopin.edu.pl
Sat Feb 22 02:06:08 CET 2014

21.02.2014 18:37, Guido van Rossum wrote:

> I'm put off by the ':' syntax myself (it looks to me as if someone
> forgot a newline somewhere)

As I mentioned at python-ideas I believe that parens neutralize,
at least to some extent, that unfortunate statement-ish flavor
of the colon.

This one has some statement-like smell:

     msg = seq[i] except IndexError: "nothing"

But this looks better, I believe:

     msg = (seq[i] except IndexError: "nothing")

Or even (still being my favorite):

     msg = seq[i] except (IndexError: "nothing")


More information about the Python-Dev mailing list