如何修复关闭文件错误时的I/O操作？

Question

我无法将单词打印到文件中。我的代码只是给我一个错误：

 import collections
    wordcount = collections.Counter()
    with open('./tekst1.txt') as infile, open('tekst2.txt', 'w') as outfile:
         for line in infile:
            wordcount.update(line.split())
    for k,v in wordcount.iteritems():
        outfile.write(line)

Answer 1

问题是，您试图在with语句关闭outfile后写入outfile。缩进for循环可以解决这个问题。

import collections
wordcount = collections.Counter()
with open('./tekst1.txt') as infile, open('tekst2.txt', 'w') as outfile:
     for line in infile:
        wordcount.update(line.split())
    for k,v in wordcount.iteritems():
        outfile.write("{}: {}".format(k, v))  # For example

但是，似乎没有任何理由同时打开这两个文件wordcount在任何情况下都不适用于with语句，因此它的值从一个with一直存在到下一个语句。

import collections


wordcount = collections.Counter()

with open('./tekst1.txt') as infile:
     for line in infile:
        wordcount.update(line.split())

with open('tekst2.txt', 'w') as outfile:
    for k,v in wordcount.iteritems():
        outfile.write("{}: {}".format(k,v))