The Python implementation filters out files of the specified file type from the directory

In a recent tutorial in python, I summarized how to filter the output of a file of a specified file type from a specified directory for later reference

#!/usr/bin/env python
import glob

import os

os.chdir( " ./ " )

for file in glob.glob( " *.py " ):

print file
print  " #######Another One########## " 
for file in os.listdir( " ./ " ):

if file.endswith( " .py " ):

print file
print  " #######Another Two########## " 

for root, dirs, files in os.walk( " ./ " ):

for file in files:

if file.endswith( " .py " ):

print os.path.join(root, file)
print  " #######Another Three########## " 
os.chdir( " ./ " )

filename_arr={}

i=0

for files in glob.glob( " *.py " ):

filename_arr[i] = files

i += 1
for key, value in filename_arr.items():

print key, value