小编use*_*417的帖子

我已经测试了下面的代码,除了第29行之外,一切都按照我的预期进行.final.write(invrow)实际上没有写入文件.当我使用简单的打印输入时,它显示没有问题.我没有错,这里发生了什么？我错过了什么？我做得不好？

import csv


inv = csv.DictReader(open('ireport.txt', 'rU'), dialect='excel-tab', delimiter="\t")
vbr = csv.DictReader(open('vb.txt', 'rU'), dialect='excel-tab', delimiter="\t")
mainr = csv.DictReader(open('main.txt', 'rU'), dialect='excel-tab', delimiter="\t")

final = open('ireport2.tab', 'w')

inva = []
maina = []
vba = []


for row in inv:
    inva.append(row)

for row in mainr:
    maina.append(row)

for row in vbr:
    vba.append(row)

for invrow in inva:
    for mainrow in maina:
        try:
            if invrow['\xef\xbb\xbfPART_CODE'] == mainrow['PART CODE']:
                invrow['MAINQTY'] = mainrow['ON-HAND']
                print invrow # works
                final.write(invrow) #doesn't work. Why?
        except TypeError:
            pass
        except ValueError:
            pass …