Tool for remaming files using python

files-rename tool

# rename files in folder

import os, time

folder = "./"
search_for = "file"
replace_to = "test"

time.sleep(2)

with os.scandir(path=folder) as it:
    for entry in it:
        if entry.is_file():
            print(entry.name)
            new_name = entry.name.replace(
                search_for, replace_to)
            print(new_name)
            os.system("mv \"" + 
                      folder + entry.name +
                      "\" \"" + new_name +
                      "\"")