Python 3 reference · Set Methods

Python Set isdisjoint() Method

Return True if the set has no elements in common with another iterable.

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Syntax

set.isdisjoint(other)

Parameter	Description
`other`	An iterable.

True or False.

Any overlap?Try it yourself

print({1, 2}.isdisjoint({3, 4}), {1, 2}.isdisjoint([2, 5]))

Output

True False

Check for forbidden wordsTry it yourself

banned = {"spam", "scam"}
words = "great offer no scam".split()
print("clean" if banned.isdisjoint(words) else "flagged")

Output

flagged

Version	Change
Python 3.0	Added

set.intersection() · Return a new set with the elements common to this set and all others. The same as a & b.
set.issubset() · Return True if every element of this set is also in the other. The same as a <= b.
Python Sets · tutorial