[Python-ideas] an unless statement would occasionally be useful

Ryan Gonzalez rymg19 at gmail.com
Sun May 17 22:57:11 CEST 2015


Has anyone done that?????

I mean, I like Python without `unless`, but I've never seen it used to mean that. Usually, `until` is used.

On May 17, 2015 3:31:29 PM CDT, Douglas La Rocca <larocca at abiresearch.com> wrote:
>it could also be confused as a synonym for
>
>    while not condition:
>        ...
>
>
>
>
>> On May 17, 2015, at 4:28 PM, Mark Lawrence <breamoreboy at yahoo.co.uk>
>wrote:
>> 
>>> On 17/05/2015 19:07, Charles Hixson wrote:
>>> I'm envisioning "unless" as a synonym for "if not(...):"  currently
>I use
>>> 
>>> if .... :
>>>     pass
>>> else:
>>>   ...
>>> 
>>> which works.
>>> 
>>> N.B.:  This isn't extremely important as there are already two ways
>to
>>> accomplish the same purpose, but it would be useful, seems easy to
>>> implement, and is already used by many other languages.  The
>advantage
>>> is that when the condition is long it simplifies understanding.
>> 
>> IMHO if a statement is only "occasionally useful" is should not be in
>the Python language.
>> 
>> -- 
>> My fellow Pythonistas, ask not what our language can do for you, ask
>> what you can do for our language.
>> 
>> Mark Lawrence
>> 
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