new_contents: import os
  import string
  
  def list_files(path):
      # returns a list of names (with extension, without full path) of all files 
      # in folder path
      files = []
      for name in os.listdir(path):
          if os.path.isfile(os.path.join(path, name)):
              files.append(name)
      return files 
  
  files = list_files("./")
  
  for file in files:
      if "#" in file:
          file = string.replace(file, "#", "\\#")
          new_file = string.replace(file, "\\#", "_")
          os.system("mv " + file + " " + new_file)
          print new_file 
  
subject: Add script to rename files in a directory.