Raymond Hettinger <[email protected]> added the comment:
My recommendation is to have *weights* as an optional argument:
statistics.mean(values, weights=None)
While it is tempting to special case dicts and counters, I got feedback from
Jake Vanderplas and Wes McKinney that in practice it is more common to have the
weights as a separate list/array/vector.
That API has other advantages as well. For starters, it is a simple extension
of the existing API, so it isn't a disruptive change. Also, it works well with
mapping views:
statistics.mean(vehicle_sales.keys(), vehicle_sales.values())
And the API also helps support use cases where different weightings are being
explored for the same population:
statistics.mean(salary, years_of_service)
statistics.mean(salary, education)
statistics.mean(salary, age)
----------
nosy: +rhettinger
versions: +Python 3.7 -Python 3.5
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue20479>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
