set.symmetric_difference_update() Symmetric diff update
Last updated: 2026-09-22
set.symmetric_difference_update() Symmetric diff update
set.symmetric_difference_update(other) updates set with the symmetric difference.
| Category | Set Methods |
|---|---|
| Kind | Built-in Type Method |
| Python Version | all |
📝 Syntax
set.symmetric_difference_update(other)⚙️ Parameters
| other Required | An iterable to compare with the set. |
|---|
Returns：None (updates the set with the symmetric difference in place).
Mutates the original：Yes (in place)
▶ Example
Edit the code, press Run, and see the result in the output panel:
Output：
{1, 4}💡 Related Cases
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❓ FAQ
QWhat does symmetric_difference_update() do?
AIt updates the set in place to be the symmetric difference of it and other, returning None.
QWhat is the difference from ^=?
AEquivalent, but ^= requires the right side to be a set; this method accepts any iterable.
QWhat happens when other is an empty set?
AThe symmetric difference is just the set itself, so the result is unchanged and no error is raised.
