19 lines
524 B
Markdown
19 lines
524 B
Markdown
---
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title: symmetric_difference
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tags: list,beginner
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---
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Returns the symmetric difference between two iterables, without filtering out duplicate values.
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Create a `set` from each list, then use list comprehension on each one to only keep values not contained in the previously created set of the other.
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```py
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def symmetric_difference(a, b):
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_a, _b = set(a), set(b)
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return [item for item in a if item not in _b] + [item for item in b if item not in _a]
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```
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```py
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symmetric_difference([1, 2, 3], [1, 2, 4]) # [3, 4]
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```
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