Python合并多个txt文件 [英] Python merge multiple txt files

问题描述

我尝试使用此代码合并一个文件夹中的多个TXT文件，但无法正常工作:

I tried to merge multiple TXT-files in a folder with this code but it is not working:

import os,shutil
path = "C:/Users/user/Documents/MergeFolder"
f=open(path + "/fileappend.txt","a")
for r,d,fi in os.walk(path):
     for files in fi:
         if files.endswith(".txt"):                         
              g=open(os.path.join(r,files))
              shutil.copyfileobj(g,f)
              g.close()
f.close()

有人有主意吗?

推荐答案

您正在path内创建fileappend.txt，同时对其进行写入.根据将写入内容刷新到磁盘的时间，您可能正在尝试读取要附加到的文件.嗯，这会引起很多怪异.考虑不要将fileappend.txt放在path内，或者在完成后仅将其移到那里.

you're creating fileappend.txt inside path, while writing to it. Depending on when the writes are flushed to disk, you may be trying to read the file that you're appending to. This would cause, well, lots of weirdness. Consider not placing fileappend.txt inside path, or else just moving it there when you're done.

您可以更简洁地编写代码，如下所示:

You can write your code more neatly as:

with open(os.path.join(path, "fileappend.tmp"), "a") as dest:
    for _, _, filenames in os.walk(path):
        for filename in fnmatch.filter(filenames, "*.txt"):
            with open(filename) as src:
                shutil.copyfileobj(src, dest)
os.rename(os.path.join(path, "fileappend.tmp"), "fileappend.txt")

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