Program for prefix and suffix number in file names in targeted folder

rename_obfuscate.py

#!/usr/bin/python

# Program for prefix and suffix number in file names in targeted folder

import os
import random

# Set target directory where the files resides
target_dir = r"/Users/darthmako/Documents/playground/udacity-python-foundation/secret-messages"
'''
r stands for rawpack. it means to tell python take this string as it is.
it will benefit you if you are in windows environment.
learn more: http://stackoverflow.com/questions/2081640/what-exactly-do-u-and-r-string-flags-do-in-python-and-what-are-raw-string-l
'''

def rename_files():
	# Save current directory path
	saved_path = os.getcwd()
	# Change to target directory where the files resides
	os.chdir(target_dir)

	# Get all file names
	file_lists = os.listdir(target_dir)
	
	# Iterate each file
	for file_name in file_lists:
		# Get filename and extensions
		name, ext = os.path.splitext(file_name)

		# Add any number on file_name
		new_name = str(random.randint(1, 1000)) + name + str(random.randint(100, 10000)) + ext
		# Rename the file
		os.rename(file_name, new_name)
		print "File renamed: %s -> %s" % (file_name, new_name)

	# Back to previous directory
	os.chdir(saved_path)

# Run the function
rename_files()