使用python删除文件夹和子文件夹中的pdf文件？

Question

I try to delete 300 pdf files. All the pdf files as different names, and they all spread in one big folder that divided to a lot of sub folders and sub sub folders. How can I do it with python (I work with python 2.7.8)?

Answer 1

Using shutil.rmtree , you can delete directories recursively.

import shutil
shutil.rmtree('/path/to/directory/that/contains/pdfs')

If the directory contians other files that is not pdf file, use following instead (which use os.walk to traverse the directories recursively, and os.remove / os.unlink to remove the pdf file).

import os

for parent, dirnames, filenames in os.walk('/path/to/the/directory'):
    for fn in filenames:
        if fn.lower().endswith('.pdf'):
            os.remove(os.path.join(parent, fn))

Answer 2

If all you want is delete just the pdf file you can use the os.walk function and fnmatch.fnmatch function.

import os
from fnmatch import fnmatch

for dirpath, dirnames, filenames in os.walk(os.curdir):
    for file in filenames:
        if fnmatch(file, '*.pdf'):
            os.remove(os.path.join(dirpath, file))

Answer 3

os.chdir to change directory. just do some tweak to locate to other directory

 #!/usr/bin/env python
    import glob
    import os
    directory='/path/folder1/folder2'
    os.chdir(directory)
    files=glob.glob('*.pdf')
    for filename in files:
        os.unlink(filename)

Answer 4

Assuming you want to delete the files while maintainig the subfolders tree, you could use a recursive algorithm:

import os

def recursively_remove_files(f):
    if os.path.isfile(f):
        os.unlink(f)
    elif os.path.isdir(f):
        map(recursively_remove_files, [os.path.join(f,fi) for fi in os.listdir(f)])

recursively_remove_files(my_directory)