rename_replace.py

import os
import sys

directory = os.path.dirname(os.path.realpath(sys.argv[0]))

for subdir, dirs, files in os.walk(directory):
	for filename in files:
		if filename.find('old_suffix_1') > 0:
			subdirectoryPath = os.path.relpath(subdir, directory)
			filePath = os.path.join(subdirectoryPath, filename)
			newFilePath = filePath.replace("old_suffix_1", ".")
			os.rename(filePath, newFilePath)
		elif filename.find('old_suffix_2') > 0:
			subdirectoryPath = os.path.relpath(subdir, directory)
			filePath = os.path.join(subdirectoryPath, filename)
			newFilePath = filePath.replace("old_suffix_2", "_image_")
			os.rename(filePath, newFilePath)