Re: finding the intersection of a list of Sets

From: "Raymond Hettinger" <python@xxxxxxx>
Date: 31 Jan 2006 08:31:05 -0800

[Peter Otten]
> >>> sets = map(set, "abc bcd cde".split())
> >>> reduce(set.intersection, sets)
> set(['c'])

Very nice. Here's a refinement:

>>> sets.sort(key=len)
>>> reduce(set.intersection, sets[1:], sets[0])
set(['c'])

.

Follow-Ups:
- Re: finding the intersection of a list of Sets
  - From: Raymond Hettinger

References:
- finding the intersection of a list of Sets
  - From: Suresh Jeevanandam
- Re: finding the intersection of a list of Sets
  - From: Peter Otten

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