CF arrayPreviousLess

#What did I do wrong?

def arrayPreviousLess(items):

    arr = []

    for x in range(len(items)):
        print('x', x)
        for y in range(x - 1, -1, -1):
            print('y', y)
            #print(arr[x], arr[y])
            #if arr[y] < arr[x]:
            if False:
                arr.append(arr[x])
    return arr