replace.py

#!/usr/bin/env python
import os
import logging

def Replace(file_path, old_string, new_string):
  with open(file_path, 'r') as f:
    content = f.read()
  with open(file_path, 'w') as f:
    f.write(content.replace(old_string, new_string))


def FindAndReplace(root_dir, old_string, new_string, suffix=None):
  root_dir = os.path.abspath(root_dir)
  for root, _, files in os.walk(root_dir):
    for f in files:
      file_path = os.path.abspath(os.path.join(root, f))
      if file_path == os.path.abspath(__file__):
        continue
      if suffix and not file_path.endswith(suffix):
        continue
      print file_path
      try:
        Replace(file_path, old_string, new_string)
      except Exception as e:
        logging.warning('Skip %s because of %s' % (file_path, repr(e)))
  print 'Done converting %s -> %s' % (repr(old_string), repr(new_string))