[Python-ideas] Add a module itertools.recipes

Nick Coghlan ncoghlan at gmail.com
Sat Oct 14 03:20:17 EDT 2017

On 14 October 2017 at 16:06, Antoine Rozo <antoine.rozo at gmail.com> wrote:

> I am not searching for an external library (as I pointed, there are some
> on PyPI like iterutils or more-itertools).
> My point was that recipes are documented in itertools module, but not
> implemented in standard library, and it would be useful to have them
> available.

Not providing the recipes as an importable API is a deliberate design
decision, as what folks often need is code that is
similar-to-but-not-exactly-the-same-as the code in the recipe. If they've
copied the code into their own utility library, then that's not a problem -
they can just edit their version to have the exact semantics they need.

Individual recipes may occasionally get promoted to be part of the module
API, but that only happens on a case by case basis, and requires a
compelling justification for the change ("It's sometimes useful" isn't
compelling enough - we know it's sometimes useful, that's why it's listed
as an example recipe).


Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia
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