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30-seconds-of-code/snippets/has_duplicates.md
Isabelle Viktoria Maciohsek 0a2f7993f7 Update snippet descriptions
2020-11-02 19:28:05 +02:00

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has_duplicates list,beginner

Checks if there are duplicate values in a flat list.

  • Use set() on the given list to remove duplicates, compare its length with the length of the list.
def has_duplicates(lst):
  return len(lst) != len(set(lst))
x = [1, 2, 3, 4, 5, 5]
y = [1, 2, 3, 4, 5]
has_duplicates(x) # True
has_duplicates(y) # False