Python script to replace underscores with spaces

rename_files.py

#!/usr/bin/python
# Usage: python rename_files.py "C:\Directory of Files with Underscores"

import os
import sys

directory = sys.argv[1] # parse through file list in the current directory

for filename in os.listdir(directory): # parse through file list in the current directory

	if filename.find("_") > 0: # if an underscore is found

		newfilename = filename.replace("_"," ") # convert underscores to space's

		newfilename.lower() # convert to lower case

		os.rename(filename, newfilename) # rename the file

Thank you for giving me a good starting point. I made a similar gist that renames files AND directories containing spaces, and also uses the 'svn mv' command to do the renames. This has the effect of doing the renames in SVN workspaces where other people have already committed files containing spaces. Hoping somebody finds it useful.

https://gist.github.com/linuxtampa/8156229

Thanks for this. Your second last line doesn't convert to lowercase: you need:

newfilename = newfilename.lower()

Otherwise you're just sending the lower case value to stdout.
I use the following to give first char as caps:

newNewfilename = newfilename[0].upper() + newfilename[1:].lower()