python读取目录和子目录中的所有文件 [英] python read all files in directory and subdirectories

问题描述

我正在尝试在python中翻译此bash行:

I'm trying to translate this bash line in python:

find /usr/share/applications/ -name "*.desktop" -exec grep -il "player" {} \; | sort | while IFS=$'\n' read APPLI ; do grep -ilqw "video" "$APPLI" && echo "$APPLI" ; done | while IFS=$'\n' read APPLI ; do grep -iql "nodisplay=true" "$APPLI" || echo "$(basename "${APPLI%.*}")" ; done

结果是显示在Ubuntu系统中安装的所有视频应用.

The result is to show all the videos apps installed in a Ubuntu system.

->读取/usr/share/applications/目录中的所有.desktop文件

-> read all the .desktop files in /usr/share/applications/ directory

->过滤字符串"video""player"以找到视频应用程序

-> filter the strings "video" "player" to find the video applications

->过滤字符串"nodisplay = true"和"audio"以不显示音频播放器和no-gui应用

-> filter the string "nodisplay=true" and "audio" to not show audio players and no-gui apps

我想要的结果是(例如):

The result I would like to have is (for example):

kmplayer
smplayer
vlc
xbmc

因此，我尝试了以下代码:

So, I've tried this code:

import os
import fnmatch

apps = []
for root, dirnames, filenames in os.walk('/usr/share/applications/'):
   for dirname in dirnames:
     for filename in filenames:
        with open('/usr/share/applications/' + dirname + "/" + filename, "r") as auto:
            a = auto.read(50000)
            if "Player" in a or "Video" in a or "video" in a or "player" in a:
              if "NoDisplay=true" not in a or "audio" not in a:
                  print "OK: ", filename
                  filename = filename.replace(".desktop", "")
                  apps.append(filename)

print apps

但是我对递归文件有问题...

But I've a problem with the recursive files...

我该如何解决? 谢谢

推荐答案

好像您在错误地执行os.walk()循环.不需要嵌套的dir循环.

Looks like you are doing os.walk() loop incorrectly. There is no need for nested dir loop.

有关正确的示例，请参阅Python手册:

Please refer to Python manual for the correct example:

https://docs.python.org/2/library/os .html?highlight = walk#os.walk

for root, dirs, files in os.walk('python/Lib/email'):
     for file in files:
        with open(os.path.join(root, file), "r") as auto:

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