nodup

a =  [1, 2, 3, 3, 3, 4, 5, 1, 1, 2, 4, 6, 7, 19]b = 1j = 1#compare a[j] with everything less a[:b]while (j < len(a)):    isin = False    for i in range(b):            if (a[i] == a[j]):                    isin = True    if not isin:            a[b] = a[j]            b += 1    j += 1a = a[0:b]