[python] Recursive sub folder search and return files in a list python

Your original solution was very nearly correct, but the variable "root" is dynamically updated as it recursively paths around. os.walk() is a recursive generator. Each tuple set of (root, subFolder, files) is for a specific root the way you have it setup.

i.e.

root = 'C:\\'
subFolder = ['Users', 'ProgramFiles', 'ProgramFiles (x86)', 'Windows', ...]
files = ['foo1.txt', 'foo2.txt', 'foo3.txt', ...]

root = 'C:\\Users\\'
subFolder = ['UserAccount1', 'UserAccount2', ...]
files = ['bar1.txt', 'bar2.txt', 'bar3.txt', ...]

...

I made a slight tweak to your code to print a full list.

import os
for root, subFolder, files in os.walk(PATH):
    for item in files:
        if item.endswith(".txt") :
            fileNamePath = str(os.path.join(root,item))
            print(fileNamePath)

Hope this helps!

EDIT: (based on feeback)

OP misunderstood/mislabeled the subFolder variable, as it is actually all the sub folders in "root". Because of this, OP, you're trying to do os.path.join(str, list, str), which probably doesn't work out like you expected.

To help add clarity, you could try this labeling scheme:

import os
for current_dir_path, current_subdirs, current_files in os.walk(RECURSIVE_ROOT):
    for aFile in current_files:
        if aFile.endswith(".txt") :
            txt_file_path = str(os.path.join(current_dir_path, aFile))
            print(txt_file_path)

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