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$ curl repovive.com/roadmaps/python/tuples-sets/set-difference

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$ curl repovive.com/roadmaps/python/tuples-sets/set-difference

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Set Difference - Tuples & Sets | Python | Repovive

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Python9 sections · 462 units23h total

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Set Difference

What's in A but not B

Difference finds elements in the first set but not the second:

a = {1, 2, 3}
b = {2, 3, 4}
only_a = a - b              # {1}
only_a = a.difference(b)    # Same result

Order matters. a - b is different from b - a:

print(a - b)  # {1} - in a but not in b
print(b - a)  # {4} - in b but not in a

Think of it as "what's in A that isn't in B?"