[Python-Dev] Requesting pronouncement on PEP 463: Exception-catching expressions (original) (raw)

Chris Angelico rosuav at gmail.com
Wed Mar 12 17:05:21 CET 2014

On Thu, Mar 13, 2014 at 2:44 AM, Barry Warsaw <barry at python.org> wrote:

That being said, the colon really bothers me, despite what is written in "Common objections". True, colons are used in places other than suite introduction, but with exception handling, colons do introduce a new suite, so its use here is jarring. There may also be tooling issues (e.g. editors, syntax colorizers, parsers, etc.).

Tooling issues should already have been solved for lambda, but if you don't like the colon, go with one of the other options - Brett expressed support for 'then', which makes very good sense (it does require creating a new keyword, but it's a fairly safe one).

ChrisA

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