Vfrdtyky

Any double asterisk in a path means all sub-directories.

Now if I have a path like this a/b/c/**/*.txt Which means I need all files under all sub-directories under c. How to get that in python?

Using glob.

From Docs:

For example, consider a directory containing the following files: 1.gif, 2.txt, card.gif and a subdirectory sub which contains only the file 3.txt. glob() will produce the following results. Notice how any leading components of the path are preserved.

>>> import glob

>>> glob.glob('./[0-9].*')

['./1.gif', './2.txt']

>>> glob.glob('*.gif')

['1.gif', 'card.gif']

>>> glob.glob('?.gif')

['1.gif']

>>> glob.glob('**/*.txt', recursive=True) #python 3.5+

['2.txt', 'sub/3.txt']

>>> glob.glob('./**/', recursive=True)

['./', './sub/']

EDIT:
For python 3.4

For older Python versions, use os.walk to recursively walk a directory and fnmatch.filter to match against a simple expression:

import fnmatch

import os



matches = 

for root, dirnames, filenames in os.walk('src'):

    for filename in fnmatch.filter(filenames, '*.txt'):

        matches.append(os.path.join(root, filename))