Re: [Python-ideas] Single line single expression try/except syntax

2019-01-27 Thread Stephen J. Turnbull
Steven D'Aprano writes: > (By the way, since Guido's retirement as BDFL, any major proposal > doesn't have to just convince him, but a committee of people (as > yet unselected). I don't read the governance PEPs that way, FWIW. A major proposal needs to convince "Python Dev", as summarized, in

Re: [Python-ideas] Single line single expression try/except syntax

2019-01-27 Thread Steven D'Aprano
On Mon, Jan 28, 2019 at 02:52:54PM +1100, Steven D'Aprano wrote: > Maybe, maybe not, but either way Michael's advice that any discussion > about try/except expressions should respond to the points raised in PEP > 463. Oops, incomplete sentence... I meant that Michael's advice to respond to the

Re: [Python-ideas] Single line single expression try/except syntax

2019-01-27 Thread Steven D'Aprano
On Sun, Jan 27, 2019 at 07:21:36PM -0800, Ben Rudiak-Gould wrote: > If Guido wrote that rejection of PEP 463 then I can't help thinking that he > changed his perspective between then and PEP 572 and might have > accepted PEP 463 if it had been proposed more recently. Maybe, maybe not, but either

Re: [Python-ideas] Single line single expression try/except syntax

2019-01-27 Thread Ben Rudiak-Gould
Aren't the arguments for accepting PEP 463 basically the same as the arguments for accepting assignment expressions? The current syntax is painfully verbose and people use inefficient and ad hoc constructions to get around it. Better to have a language feature to support the way that people actuall

Re: [Python-ideas] Single line single expression try/except syntax

2019-01-27 Thread Michael Selik
Any discussion of except expressions should reference PEP 463 and respond to the arguments there. https://www.python.org/dev/peps/pep-0463/ On Sun, Jan 27, 2019, 3:52 AM Alex Shafer via Python-ideas < python-ideas@python.org wrote: > Hello, > > I'd like to discuss an idea I had to shorten the sy

[Python-ideas] Single line single expression try/except syntax

2019-01-27 Thread Alex Shafer via Python-ideas
Hello, I'd like to discuss an idea I had to shorten the syntax for the common case of having a try/except/finally/else block where all of the following conditions are met: * There is only one except block, no finally or else * The exception is not captured in the except block, i.e. `except KeyE