Best way to find the intersection of multiple sets?

Question

Consider the below list of sets:

setlist = [s1,s2,s3...]

I need s1 ∩ s2 ∩ s3 ...

I can also compose a function to do it, just by performing a series of s1.intersection(s2), etc.

I just want to know is any better or recommended way?

Answer 1

From Python version 2.6 on you can utilize numerous arguments to set.intersection(), like    

u = set.intersection(s1, s2, s3)

In case, if the sets are in lists, then this will translate to:

u = set.intersection(*setlist)

Here. *a_list is a list expansion

Note that set.intersection is certifiably not static method, however this uses the useful notation to apply convergence of the first set with the remainder of the list. So if the argument list is vacant this will fizzle.

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