cb8bbd9745
Update formatting in every_nth Update formatting in shuffle Update formatting in has_duplicates Update formatting in group_by Update formatting in sum_by Update formatting in zip Update formatting in longest_item Update formatting in bifurcate_by Update formatting in difference_by Update formatting in clamp_number Update formatting in min_by Update formatting in max_by Update formatting in union Update formatting in n_times_string Update formatting in check_prop Update formatting in chunk Update formatting in transpose Update formatting in bifurcate Update formatting in union_by Update formatting in initialize_list_with_range Update formatting in most_frequent
21 lines
409 B
Markdown
21 lines
409 B
Markdown
---
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title: has_duplicates
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tags: list,beginner
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---
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Returns `True` if there are duplicate values in a flast list, `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 has_duplicates(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, 5]
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y = [1, 2, 3, 4, 5]
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has_duplicates(x) # True
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has_duplicates(y) # False
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```
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