20 lines
383 B
Markdown
20 lines
383 B
Markdown
---
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title: all_unique
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tags: list,beginner
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---
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Returns `True` if all the values in a flat list are unique, `False` otherwise.
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Use `set()` on the given list to remove duplicates, compare its length with the length of the 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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``` |