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gaurav1780@gmail.com 04_lists > contains_duplicate
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Define a function that when passed a list, returns true if it contains any item more than once, false otherwise.


contains_duplicate([1, 7, 2, 9]) → False
contains_duplicate([1, 7, -7, 2, 9]) → False
contains_duplicate([0, 0, 0, 0, 0, 0, 0, 0, 0]) → True

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def contains_duplicate(data):

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