new_contents: #!/usr/bin/env python
  
  import re,glob,os,sys
  
  def rename(dir_path, search_pattern):
      for file_path in glob.iglob(os.path.join(dir_path, search_pattern)):
          title, ext = os.path.splitext(os.path.basename(file_path))
          res = "_".join([s.group(0).lower()  for s in
              re.finditer(r"[A-Z][a-z]+", title)])
          print title
          print ext
          print res
  
          if res:
              print "ddd"
              if ext == ".cxx":
                  os.rename(file_path, os.path.join(dir_path, res + ".cc"))
              elif ext == ".h":
                  print "psss me"
                  os.rename(file_path, os.path.join(dir_path, res + ".h"))
  
  
  dir_path = sys.argv[1]
  rename(dir_path, "*.cxx")
  rename(dir_path, "*.h")
  
  # re.finditer(
  
subject: Add a script to help to refactor source code.