from uuid import uuid4
import random

extintions = ['zip', 'exe', 'txt', 'py', 'mp4', 'mp3', 'png']

def generate_files(files_len, folder):
    for i in range(files_len):
        file_name = f'{folder}/{str(uuid4())}.{random.choice(extintions)}'
        file_size = (1024 * 1024) * random.randint(1, 10)
        file = open(file_name, 'wb')
        file.write(b'\b' * file_size)
        file.close()

generate_files(20, 'test')