22 lines
406 B
Markdown
22 lines
406 B
Markdown
---
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title: all_unique
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tags: list,beginner
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---
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Checks if all the values in a list are unique.
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- Use `set()` on the given list to keep only unique occurrences.
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- Use `len()` to compare the length of the unique values to the original list.
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```py
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def all_unique(lst):
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return len(lst) == len(set(lst))
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```
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```py
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x = [1, 2, 3, 4, 5, 6]
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y = [1, 2, 2, 3, 4, 5]
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all_unique(x) # True
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all_unique(y) # False
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```
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