使用os.path.join()来构造你的路径-这样更整洁:

import os
import sys
rootdir = sys.argv[1]
for root, subFolders, files in os.walk(rootdir):
    for folder in subFolders:
        outfileName = os.path.join(root,folder,"py-outfile.txt")
        folderOut = open( outfileName, 'w' )
        print "outfileName is " + outfileName
        for file in files:
            filePath = os.path.join(root,file)
            toWrite = open( filePath).read()
            print "Writing '" + toWrite + "' to" + filePath
            folderOut.write( toWrite )
        folderOut.close()

如果仅仅是文件名还不够，在os.scandir()上实现深度优先搜索是很容易的:

stack = ['.']
files = []
total_size = 0
while stack:
    dirname = stack.pop()
    with os.scandir(dirname) as it:
        for e in it:
            if e.is_dir(): 
                stack.append(e.path)
            else:
                size = e.stat().st_size
                files.append((e.path, size))
                total_size += size

医生是这么说的:

scandir()函数返回目录条目和文件属性信息，为许多常见用例提供了更好的性能。

这招对我很管用:

import glob

root_dir = "C:\\Users\\Scott\\" # Don't forget trailing (last) slashes    
for filename in glob.iglob(root_dir + '**/*.jpg', recursive=True):
     print(filename)
     # do stuff

同意Dave Webb的观点。Walk将为树中的每个目录生成一个项。事实上，您不需要关心子文件夹。

这样的代码应该可以工作:

import os
import sys

rootdir = sys.argv[1]

for folder, subs, files in os.walk(rootdir):
    with open(os.path.join(folder, 'python-outfile.txt'), 'w') as dest:
        for filename in files:
            with open(os.path.join(folder, filename), 'r') as src:
                dest.write(src.read())

我发现下面的方法是最简单的

from glob import glob
import os

files = [f for f in glob('rootdir/**', recursive=True) if os.path.isfile(f)]

使用glob('some/path/**'， recursive=True)获取所有文件，但也包括目录名。添加if os.path.isfile(f)条件只过滤现有文件

确保你理解os.walk的三个返回值:

for root, subdirs, files in os.walk(rootdir):

具有以下含义:

root:被“遍历”的当前路径 subdirs:目录类型根目录下的文件 files:根目录下(不是subdirs目录下)的非directory类型的文件

请使用os.path.join而不是用斜杠连接!您的问题是filePath = rootdir + '/' + file -您必须连接当前“行走”的文件夹，而不是最上面的文件夹。filePath = os。path。加入(根、文件)。顺便说一句，“文件”是内置的，所以你通常不使用它作为变量名。

另一个问题是你的循环，应该是这样的，例如:

import os
import sys

walk_dir = sys.argv[1]

print('walk_dir = ' + walk_dir)

# If your current working directory may change during script execution, it's recommended to
# immediately convert program arguments to an absolute path. Then the variable root below will
# be an absolute path as well. Example:
# walk_dir = os.path.abspath(walk_dir)
print('walk_dir (absolute) = ' + os.path.abspath(walk_dir))

for root, subdirs, files in os.walk(walk_dir):
    print('--\nroot = ' + root)
    list_file_path = os.path.join(root, 'my-directory-list.txt')
    print('list_file_path = ' + list_file_path)

    with open(list_file_path, 'wb') as list_file:
        for subdir in subdirs:
            print('\t- subdirectory ' + subdir)

        for filename in files:
            file_path = os.path.join(root, filename)

            print('\t- file %s (full path: %s)' % (filename, file_path))

            with open(file_path, 'rb') as f:
                f_content = f.read()
                list_file.write(('The file %s contains:\n' % filename).encode('utf-8'))
                list_file.write(f_content)
                list_file.write(b'\n')

如果你不知道，文件的with语句是一种简写:

with open('filename', 'rb') as f:
    dosomething()

# is effectively the same as

f = open('filename', 'rb')
try:
    dosomething()
finally:
    f.close()