How to traverse the files in a directory and sub-directories in python

Question

I have scenario to process the files in python

my process tree structure is like

dirctory
.
...subdir1
     .
     ....sub-sub-dir1
           .
           . ..file1

First I need to go the subdir1 and read one by one sub-sub-dirs (1 to n) and get the file from the sub-sub-dir and process.
Like this process all the files in sub-sub-dirs then go back to the sub-dir loop.
Read next subdir and read the one by one sub-sub-dirs and get the file from the sub-sub-dir and process.

Please, help me out how can we do the above in Python. I would be grateful to you if I get a quick response.

Thanks

there are a lot of similar questions that have really good answers, try http://stackoverflow.com/questions/5817209/browse-files-and-subfolders-in-python for example — mitoRibo, Aug 22 '16 at 23:00
Possible duplicate of [Using os.walk() to recursively traverse directories in Python](http://stackoverflow.com/questions/16953842/using-os-walk-to-recursively-traverse-directories-in-python) — sushain97, Aug 22 '16 at 23:01

Martin · Answer 1 · 2016-08-22T23:15:33.120

Something like that:

directory_dict = dict()

# Create the list of the sub_directories
dir_list = [sub_path for sub_path in os.listdir(given_path) if os.path.isdir(given_path+'/'+sub_path)]

# Loop into the list of sub_directories
for sub_dir in dir_list:
    # Create an empty dict to store the informations
    sub_dir_dict = dict()

    # Create the list of the sub_sub_directories
    sub_sub_dir_list = [sub_path for sub_path in os.listdir('%s/%s' % (given_path, sub_dir)) if os.path.isdir(given_path+'/'+sub_dir+'/'+sub_path)]

    # Loop into the sub_sub_directories list
    for sub_sub_dir in sub_sub_dir_list:
        # Set current directory to the sub_sub_directory path
        os.chdir(given_path+'/'+sub_dir+'/'+sub_sub_dir)
        # Filter files
        files = [dir_file for dir_file in os.listdir(given_path+'/'+sub_dir+'/'+sub_sub_dir) if os.path.isfile(os.path.join(given_path+'/'+sub_dir+'/'+sub_sub_dir, dir_file))]

         # Store the list of file into the sub_directory dict at the proper key
         sub_dir_dict[sub_sub_dir] = files
    # Store the sub_dir dictionaries into the directory_dict at the proper key
    directory_dict[sub_dir] = sub_dir_dict

You should really look at this: http://stackoverflow.com/a/5817256/4396006 — , Aug 22 '16 at 23:24
I knew this but I have to say, I'm not used to it yet, even though I should get to it, anyway, thank you for that, those examples are clearer than the one I saw until now. — Martin, Aug 23 '16 at 01:32

How to traverse the files in a directory and sub-directories in python

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