我最近开始学习python并且遇到了一些麻烦。有问题的函数试图从给定的直接开始,在我的例子中,'/ home / jesse / ostest',搜索所有子目录,并将所有'.txt'文件复制到'/ home / jesse / COPIES ”。当我运行该程序时,一些文件被coppied但它陷入无限循环。当它变为'/ home / jesse'时(第10行搜索()),我希望它能够中断。也许我不太了解递归,但感谢帮助。
这是一个测试目录,带有用于测试程序的子目录。
[jesse@jesse ostest]$ tree
.
├── readme.txt
├── README_WxPython.txt
├── rect.txt
├── RELEASE_NOTES.txt
├── scrap.txt
├── sndarray.txt
├── sprite.txt
├── surface.txt
├── surfarray.txt
├── test_oo.txt
├── tests.txt
├── this
│ ├── gme_notes.txt
│ ├── gme_readme.txt
│ ├── h1.txt
│ ├── h2.txt
│ ├── how_to_build.txt
│ ├── howto_release_pygame.txt
│ ├── image.txt
│ ├── IMPORTANT_MOVED.txt
│ ├── index.txt
│ ├── install.txt
│ ├── is
│ │ ├── a
│ │ │ ├── color.txt
│ │ │ ├── common.txt
│ │ │ ├── cursors.txt
│ │ │ ├── dec.txt
│ │ │ ├── defs.txt
│ │ │ └── display.txt
│ │ ├── event.txt
│ │ ├── examples.txt
│ │ ├── filepaths.txt
│ │ ├── font.txt
│ │ ├── freetype.txt
│ │ ├── gfxdraw.txt
│ │ ├── gme_design.txt
│ │ └── path
│ │ ├── api.txt
│ │ ├── auth.txt
│ │ ├── camera.txt
│ │ ├── cdrom.txt
│ │ ├── cert_override.txt
│ │ ├── changes_for_symbian.txt
│ │ └── CHANGES.txt
│ └── joystick.txt
├── time.txt
├── TODO.txt
└── transform.txt
4 directories, 45 files
以下是代码:
def copyAll():
print('This function attempts to search through /home/jesse/ostest and copy all .txt files.')
input('Press <enter> to begin..')
new = '/home/jesse/COPIES'
os.mkdir(new)
done = []
search('/home/jesse/ostest', new, done)
print(os.getcwd())
print(os.listdir())
def search(arg, new, done):
os.chdir(arg)
print(os.getcwd())
for var in os.listdir():
if os.path.isdir(var) and var not in done:
search(var, new, done)
elif var[-4:] == '.txt' and var not in done:
shutil.copy2(var, '/home/jesse/COPIES')
print('COPIED', var, '\t\tto', new)
elif os.getcwd() == '/home/jesse':
break
else:
done += os.getcwd()
os.chdir('..')
search(os.getcwd(), new, done)
答案 0 :(得分:1)
首先看看os.walk():
答案 1 :(得分:0)
我现在已经开始工作了。
新代码:
def copyAll():
print('Copy all files from a heirarchy.')
tar = input('Enter a directory to start from: ')
new = '/home/jesse/COPIES'
os.mkdir(new)
for root, dirs, files, in os.walk(tar):
for file in files:
if file[-4:] == '.txt':
shutil.copy2(root+'/'+file, new)
print('COPIED', file, '\t\tto', new)
我输入了'/'作为tar,并在收到错误之前复制了650多个文件!现在只需修复错误。