[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On Wed, 19 Jul 2023 at 11:51, Dom Grigonis wrote: > > Coming back to deferred evaluation, > > https://peps.python.org/pep-0671/ > These 2 aren’t really orthogonal in functionality. Maybe in implementation. > But PEP671 is a certain subset of deferred evaluation as it can achieve the > same with 1

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

Coming back to deferred evaluation, https://peps.python.org/pep-0671/ These 2 aren’t really orthogonal in functionality. Maybe in implementation. But PEP671 is a certain subset of deferred evaluation as it can achieve the same with 1 extra line at the start of

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On 7/18/23 12:03 AM, Dom Grigonis wrote: Ok, thanks. I think what I am aiming at is that there is a pool of suggestions and PEPs that are pointing towards very similar direction and I find myself often wandering in the same space, just trying to figure out what it exactly is. It sometimes fee

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On Tue, 18 Jul 2023 at 19:02, Dom Grigonis wrote: > > Thank you. > > I meant “superset of 671, not 505”… > > One question: > > def bar(a => None); > return foo(a) > > def foo(a => object()): > return a > > How would I force foo’s default from bar’s call? That's a known-hard problem. The b

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

Thank you. I meant “superset of 671, not 505”… One question: def bar(a => None); return foo(a) def foo(a => object()): return a How would I force foo’s default from bar’s call? Would something like this work? def foo(a => object() if a is None else a): return a > On 18 Jul 2023, a

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On Tue, 18 Jul 2023 at 16:25, Dom Grigonis wrote: > > Yes, thank you, this would definitely be nice to have. > > Although, "A generic system for deferred evaluation has been proposed at > times“ sound better if it was a superset of PEP505. Could you refer me to any > resources about such conside

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

Yes, thank you, this would definitely be nice to have. Although, "A generic system for deferred evaluation has been proposed at times“ sound better if it was a superset of PEP505. Could you refer me to any resources about such considered system? > On 18 Jul 2023, at 08:33, Chris Angelico wrote

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On Tue, 18 Jul 2023 at 14:07, Dom Grigonis wrote: > PEP505 would solve this nicely, but it only applies to None and would not > apply to say user-defined sentinels and many other cases where permutations > of different conditionals arise. > PEP 671 would solve this nicely too. ChrisA _

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

Ok, thanks. I think what I am aiming at is that there is a pool of suggestions and PEPs that are pointing towards very similar direction and I find myself often wandering in the same space, just trying to figure out what it exactly is. It sometimes feels more verbose than it could be for what it

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On 18/07/23 10:30 am, Dom Grigonis wrote: Although, the argument that python is meant to be read as english is very much valid, but I do not see why it has to be an overarching one if the opportunity cost of it is too great in other dimensions. It's not overarching. Many things in Python don't

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

Much of what you respond to me indicates that you did not properly read what I have written and did not really understand where I am coming from. > On 18 Jul 2023, at 04:04, Chris Angelico wrote: > > On Tue, 18 Jul 2023 at 10:37, Dom Grigonis wrote: >> As opposed to >> >> if a == 0: >> foo,

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On Tue, 18 Jul 2023 at 10:37, Dom Grigonis wrote: > As opposed to > > if a == 0: >foo, bar = var1, variable2 > else: >foo, bar = default, default2 > > > Again, one is `a == 0`, another is `b == 0`. I didn’t do a good job conveying > this did I… Will try to be more precise and leave less r

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

>> # Code becomes easily read when there is a nice alignment in horizontal >> space. e.g.: >> >> variable = None >> length_1 = None >> somethin = None >> > > variable = length_1 = somethin = None Obviously they would not all be None, just chosen None as `any dummy value`, mistake on my part

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

On Tue, 18 Jul 2023 at 08:34, Dom Grigonis wrote: > > I still feel that compared to list comprehension and other functional and > elegant python constructs, python's if-else expression is lacking. I often > choose to go multi-line much more verbose code as opposed to more brief > constructs jus

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

Ah, I can’t do that post-publish. This will have to suffice for now. If this got to a point where there was a case to revise 2005 decision or introduce an alternative (which I very much doubt can happen any time soon), much more elaborate research and survey would have to be done and all options

[Python-ideas] Re: Conditional 1-line expression in python (Dom Grigonis)

Hello all, Please Dom Grigonis add choices : - "No preference" choice to first question - "I don't know" or "I can't tell" to third question And I will answer to your poll and probably other people will feel and do the same. I agree that question 2 makes me prefer C syntax. But C is not the nicest