Question

import os
searchquery = 'word'
with open('C:/Documents/result.txt', 'w') as f:
    for filename in os.listdir('Y:/Documents/data'):
        with open('C:/Documents/data/' + filename) as currentFile:
            text = currentFile.read()
            for line in text:
                if searchquery in line:
                    f.write(searchquery + filename[:-4] + '\n')
                else:
                    print('not here!')

帮助？为什么这不会在目录中搜索“word”的多个文件，然后在新文件中写入包含“word”的整行？

输入文件如下：

Blah
Blah
Blah
Blah
Word blah
Blah

我希望输出只写一个文件：

Word blah <file name>
Word blah <file name2>

Answer 1

在您的代码中列出'Y:/Documents/data'，但是您从'C:/Documents/data/'读取。这就是问题所在。试试这个：

import os
searchquery = 'word'
with open('C:/Documents/data/result.txt', 'w') as f:
    for filename in os.listdir('Y:/Documents/data/'):
        with open('Y:/Documents/data/' + filename) as currentFile:
            for line in currentFile:
                if searchquery in line:
                    f.write(searchquery + filename + '\n')
                else:
                    print('not here!')

python从多个文件读取和写入

1 个答案: