The main problem with Python intersection of 2 sets is that it can be difficult to determine which elements of the first set are also in the second set.

def intersection(set1, set2): return set1.intersection(set2)

This is a function definition. The function is named “intersection” and it takes two arguments, “set1” and “set2”. The function returns the result of calling the “intersection” method on set1, with set2 as the argument to that method.

## What are sets in Python

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A set in Python is a collection of unique objects. Sets are useful for organizing data, and they can be used to make comparisons.