#!/usr/bin/env python2
try:
    import os,shutil
except ImportError:
    print "[!] One or more library is missing...\n\n"
    exit(-1)

current_dir = '.'

for subdirs, dirs, files in os.walk(current_dir):
    for item in files:
        old_value = ''
        new_value = ''

        shutil.copyfile(os.path.join(subdirs,item),os.path.join(subdirs,item)+'.backup')

        fp = open(item,'r')
        file_contents = fp.read()
        new_file_contents = file_contents.replace(old_value, new_value)
        fp.write(new_file_contents)
        fp.close()