Question: 
Write a function to find whether a given array of integers contains any duplicate element.


Model's Code:
def test_duplicate(arr):
    return len(arr) != len(set(arr))



Sample Correct Code:
def test_duplicate(arraynums):
    nums_set = set(arraynums)    
    return len(arraynums) != len(nums_set)     


Asserts:
assert test_duplicate(([1,2,3,4,5]))==False
assert test_duplicate(([1,2,3,4, 4]))==True
assert test_duplicate([1,1,2,2,3,3,4,4,5])==True


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 19 of 974: 14/19 (73.68421052631578%): success