Question

请详细说明为什么要解压缩太多（我的for循环中的ValueError）.Have试过deb

 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)))

Answer 1

因为naislist中每个项目有四个元素，而你的循环只指定两个变量（tu, x）来解压缩它们。

ValueError：要在元组中解压缩的值太多

1 个答案: