This script is useful if you have files that were somehow splitted (DVR recorders do this) and you want to join them back into one file. Simply fill out string OUTPUT_FILENAME and tuple of INPUT_FILES with files you want to join and run the script.

join_files.py

OUTPUT_FILENAME = ''
INPUT_FILES = (
    '',
)


with open(OUTPUT_FILENAME, 'bw') as output:
    print(f'Opened {OUTPUT_FILENAME} for writing')
    for path in INPUT_FILES:
        with open(path, 'br') as f:
            print(f'Writing {path} to the output')
            output.write(f.read())