The filenames.txt contains all the names of the files that you want to change in a given directory.It is generated by:import oswalk = os.walk(./app/)for dirpath, dirs, files in walk:    for filename in files:        fpath = os.path.join(dirpath, filename)        with open(filenames.txt, a) as f:            f.write(filename + \n)The Test directory is the directory whose files you are targeting.Rename files.Rename file references containing `-` with `_`import os# Directory to traversewalk = os.walk('./Test/')# A file containing filenames that you want to change.# Already generatedwith open(filenames.txt) as filenames_to_change:    names = filenames_to_change.read().splitlines()for dirpath, dirs, files in walk:    for filename in files:        fpath = os.path.join(dirpath, filename)        for name in names:            old_name = name            new_name = name.replace('-', '_')            print({} >>> {}.format(old_name, new_name))            with open(fpath) as f:                s = f.read()            s = s.replace(old_name, new_name)            with open(fpath, w) as f:                f.write(s)
Renames file-name references inside files in a directory
python;python 3.x