rename.py

#!/usr/bin/python

import os
import sys
import getopt
import re
import os.path

def main():

    for dirpath, dirnames, filenames in os.walk(sys.argv[1]):
    # for i in os.walk(sys.argv[1]):
        # for i in filenames:
            # new_filename = re.sub(r' ', r'.', filename)

            # full_filename = os.path.join(dirpath, filename)
            # if re.search(r' ', full_filename) != None:
            # new_full_filename = re.sub(r' ',r'.',full_filename)
            # os.rename(full_filename, new_full_filename)
            # if full_filename != new_full_filename:
            #     print full_filename + " -> " + new_full_filename
        for filename in filenames:
            new_filename = re.sub(r' ', r'.', filename)
            if new_filename != filename:
                old_full_filename = os.path.join(dirpath, filename)
                new_full_filename = os.path.join(dirpath, new_filename)
                os.rename(old_full_filename, new_full_filename)
                print 'File: ', old_full_filename, ' -> ', new_full_filename
                
        for dirname in dirnames:
            new_dirname = re.sub(r' ', r'.', dirname)
            if new_dirname != dirname:
                old_full_dirname = os.path.join(dirpath, dirname)
                new_full_dirname = os.path.join(dirpath, new_dirname)
                os.rename(old_full_dirname, new_full_dirname)
                print 'Directory: ', old_full_dirname, ' -> ', new_full_dirname



if __name__ == "__main__":
    main()

Yes, thank You i finally used very similiar string to rename those files