def f(x):
    # UNPACK_SEQUENCE 400
    # is actually
    #     EXTENDED_ARG 1
    #     UNPACK_SEQUENCE 144
    (
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,

        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,

        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,

        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
        y,y,y,y,y, y,y,y,y,y, y,y,y,y,y, y,y,y,y,y,
    ) = x

# 0..7 get printed out before we get 
# ValueError: too many values to unpack (expected 144)
for i in range(30):
    print(i)
    f(range(400))