Python script to uncompress all the rar files in the current directory and delete the compressed .rar afterwards. It uses several system subprocesses in parallel to speed-up the process. Also valid if the files are protected with a password. Requires the rarfile (https://pypi.org/project/rarfile/) package

unrarer.py

import glob
import multiprocessing
import os

import rarfile

NUM_PROCESSES = 5
PASSWORD = None # Set to a string if the rar files are protected with a password

def log(msg):
    print(msg)

def list_files(pattern):
    return glob.glob(f"./{pattern}")

def extract_rar(filename):
    log(f"Extracting {filename}...")
    rar = rarfile.RarFile(filename)
    rar.extractall(pwd=PASSWORD)
    log(f"Extraction completed!")

def delete_file(filename):
    log(f"Deleting file {filename}...")
    os.remove(filename)
    log(f"<Not actually deleting, just testing this for the moment>")

def process_file(filename):
    try:
        extract_rar(filename)
        delete_file(filename)
    except Exception as e:
        log("********************************************************")
        log(f"ERROR WHEN PROCESSING {filename}")
        log(e)
        log("********************************************************")


rar_files = list_files('*.rar')
with multiprocessing.Pool(NUM_PROCESSES) as p:
    p.map(process_file, rar_files)