gistfile1.txt

stream = [1,2,3,4,5,6,7,7,7,7]


def maxN(stream, n):
    result = []
    for i in stream:
        if i not in result:
            result.append(i)
            result.sort(reverse=True)
            result = result[0:n]
    return result


print( maxN(stream, 3) )