Search and replace in text files from a folder and its subfolders without changing last modified date - Here is demo with .rpp and .rpp-bak files REAPER files

X-Raym_Search and replace.py

import sys
import os
from os import path

debug = False

#### USER INPUT ####
if debug:
	dirName = "E:\\Bureau\\"
	search = "F:\\Bureau\\SOUNDS"
	replace = "F:\\Bureau\\SOUNDS-B"
else:
	if len( sys.argv ) == 3: # Check if it has enough arguments
		dirName = sys.argv[1] # Take first argument of the command
		search = sys.argv[2]
		replace = sys.argv[3]
	else:
		dirName = input("Folder?\n")
		search = input("Search?\n")
		replace = input("Replace?\n")


if os.path.isdir( dirName ) == False: # Does the folder exists?
	print("Invalid inputs")
	sys.exit("Folder doesn't exist.") # then kill the script

#### Process ####

# Get the list of all files in directory tree at given path
for (dirpath, dirnames, filenames) in os.walk(dirName):
	for file in filenames:
		if( file.lower().endswith(('.rpp', '.rpp-bak')) ):

			# Get Path
			file_path = os.path.join(dirpath, file)
			print(file_path)

			# Get Last Modified Date
			last_modified_time = os.path.getmtime( file_path )

			# Open File in Memory
			f = open(file_path,'r', encoding="utf-8")
			filedata = f.read()
			f.close()

			# Replace Content
			newdata = filedata.replace( search, replace )

			# Write File over Original
			f = open(file_path,'w', encoding="utf-8")
			f.write(newdata)
			f.close()

			# Restore Last Modified Date
			os.utime( file_path, (last_modified_time, last_modified_time) )