29 Jun
2018
29 Jun
'18
11:04 a.m.
A syntax that would work (which atm is a syntax error, and requires no new keyword) would be
student_by_school = {school: [student] for school, student in student_school_list, grouped=True}
with grouped=True being a modifier on the dict comprehension so that at each iteration loop
current_dict[key] = value if key not in current_dict else current_dict[key] + value
This is an extremely borderline syntax (as it is perfectly legal to put **{'grouped': True} in a dict comprehension), but it works. It even keeps the extremely important "should look like a template of the final object" property.
But it doesn't requires me to defines 2 lambda functions just to do the job of a comprehension.
--
Nicolas Rolin
2018-06-29 4:57 GMT+02:00 Michael Selik mike@selik.org:
> On Thu, Jun 28, 2018, 6:46 PM Nicolas Rolin nicolas.rolin@tiime.fr
> wrote:
>
>> The questions I should have asked In my original post was :
>> - Is splitting lists into sublists (by grouping elements) a high level
>> enough construction to be worthy of a nice integration in the comprehension
>> syntax ?
>>
>
> My intuition is no, it's not important enough to alter the syntax, despite
> being an important task.
>
> - In which case, is there a way to find a simple syntax that is not too
>> confusing ?
>>
>
> If you'd like to give it a shot, try to find something which is currently
> invalid syntax, but does not break compatibility. The latter criteria means
> no new keywords. The syntax should look nice as a single line with
> reasonably verbose variable names.
>
> One issue is that Python code is mostly 1-dimensional, characters in a
> line, and you're trying to express something which is 2-dimensional, in a
> sense. There's only so much you can do without newlines and indentation.
>
--
--
*Nicolas Rolin* | Data Scientist
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