[Python-Dev] Python Language Reference has no mention of list comÃprehensions

[Ryan Gonzalez]

On December 3, 2015 10:09:56 AM CST, Ryan Gonzalez <rymg19 at gmail.com> wrote:
>
>
>On December 3, 2015 8:26:23 AM CST, Laura Creighton <lac at openend.se>
>wrote:
>>In a message of Thu, 03 Dec 2015 13:37:17 +0000, Paul Moore writes:
>>>On 3 December 2015 at 12:51, Laura Creighton <lac at openend.se> wrote:
>>>> Intentional or Oversight?
>>>
>>>Hard to find :-)
>>>
>>>https://docs.python.org/3/reference/expressions.html#displays-for-lists-sets-and-dictionaries
>>>
>>>I went via "Atoms" in the expression section, then followed the links
>>>in the actual grammar spec.
>>>
>>>Paul
>>
>>I think the whole use of the language displays as in
>>  
>>  6.2.4. Displays for lists, sets and dictionaries
>>
>>  For constructing a list, a set or a dictionary Python provides 
>>  special syntax called “displays”, each of them in two flavors:
>>
>>    either the container contents are listed explicitly, or
>>    they are computed via a set of looping and filtering instructions,
>
>>    called a comprehension.
>>
>>is very odd.  I don't know anybody who talks of 'displays'.  They
>>talk of 'two ways to construct a'.  
>>
>>Who came up with the word 'display' and what does it have going for
>>it that I have missed?  Right now I think its chief virtue is that
>>it is a meaningless noun.  (But not meaningless enough, as I
>>associate displays with output, not construction).
>>
>>I think that 
>>
>>    6.2.4 Constructing lists, sets and dictionaries
>>
>>would be a much more useful title, and
>>
>>6.2.4 Constructing lists, sets and dictionaries -- explicitly or
>>through the use of comprehensions
>>
>
>What about:
>
>6.2.4 Constricting lists, sets, and dictionaries (including
>comprehensions)
>

Whoops! I meant "Constructing", not "Constricting". Pythons definitely constrict their prey, but that's not what I was referring to...

>or something to that effect?
>
>>an even better one.
>>
>>Am I missing something important about the 'display' language?
>>
>>Laura
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