set.isdisjoint
Check that the set and another collection have no items in common.
Python 3.13
set.isdisjoint(other)Parameters
- otherIterable
- The collection to compare with.
Return value
True if there are no common items, otherwise False.
Examples
No common items
Python 3.13
print({1, 2}.isdisjoint({3, 4}))True
A common item with a list
Python 3.13
print({'a', 'b'}.isdisjoint(['b', 'c']))False
Details
Unlike the check not (a & b), it does not build a new set and stops at the first common item. An empty set has no common items with any collection.