アンパックするのに多すぎる理由を明らかにしてください(forループのValueError)。debを試しました
naislist = [('CONTROL FILE', '0', '0', '0'),
('REDO LOG', '0', '0', '0'),
('ARCHIVED LOG', '.69', '.59', '3'),
('BACKUP PIECE', '46.54', '0', '192'),
('IMAGE COPY', '0', '0', '0'),
('FLASHBACK LOG', '10.15', '6.31', '82'),
('FOREIGN ARCHIVED LOG', '0', '0', '0')]
print "size of naislist is ",len((naislist))
heading = ('MAIN MENU', 'LEVELS', 'LEVEL2', 'LEVEL3')
rearrange = dict(zip((0, 1, 2, 3), (len(str(x)) for x in heading)))
for tu, x in naislist:
rearrange.update((i, max(rearrange[i], len(str(el)))) for i, el in enumerate(tu))
rearrange[4] = max(rearrange[4], len(str(x)))
forkit = '|'. join('%%-%ss' % rearrange[i] for i in xrange(0, 4))
print '\n'.join((forkit % heading,
'-|-'.join(rearrange[i] * '-' for i in xrange(4)),
'\n'.join(forkit % (a, b, c, d) for (a, b, c), d in naislist)))