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Date: Sun, 5 Jul 2015 15:36:25 -0500
From: Tim Chase <python.list@tim.thechases.com>
To: python-list@python.org
Subject: Re: (side-)effects and ...
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On 2015-07-05 20:29, Stefan Ram wrote:
>   But why do we not have a common and well-known term for
>   the counterpart, that something does not modify the state
>   of the world, but that the state of the world does=20
>   influence the value (behaviour) of a call such as
>   =C2=BBdatetime.datetime.now().time()=C2=AB?

I believe the term is "idempotent"

https://en.wikipedia.org/wiki/Idempotent_function#Computer_science_meaning

-tkc