[issue21414] Add an intersperse function to itertools

[Éric Araujo]

Éric Araujo added the comment:

I looked for a previous discussion of this on the Python mailing lists and found nothing.

Existing solutions include https://twitter.com/snim2/status/393821419114483712 and http://stackoverflow.com/questions/5655708/python-most-elegant-way-to-intersperse-a-list-with-an-element

Raymond is the one to decide whether this should be added.  If he doesn't comment in the near future, feel free to propose this on python-ideas to see if people like it.  You may also want to ask maintainers of projects like more-itertools if they have a similar function and if people use it.

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nosy: +eric.araujo, rhettinger

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