Python - 循环遍历不同文件夹中的文件

Question

我想从嵌套在子文件夹中的多个文件中提取数据。

例如文件夹结构

A/B/C/D.dat
A/B/E/F.dat
A/B/G/H.dat

我想出的代码是:

import os
values = 2
doc = []
rootdir = 'C:/A/B'

for subdir, dirs, files in os.walk(rootdir):
    for file in files:
        if file.endswith('.dat'):
            with open (file, 'rt') as myfile:
                    current_line = 0
                    for mylines in myfile:
                            if current_line == values:
                                doc.append()
                                break
                            current_line += 1
            continue

print(doc)

我努力解决的错误:

...with open (file, 'rt') as myfile:
IOError: [Errno 2] No such file or directory: 'D.dat'

Answer 1

尽管您的解决方案不是最干净的。您遇到的错误来自

            with open (file, 'rt') as myfile:

应替换为

            with open (subdir + "/" + file, 'rt') as myfile: