ArXiver

# Saves ArXiv papers locally in the directory in which the script is run in. Intended to run on GNU/Linux but should work on any system
import shutil, requests, time
from random import randint

while True:
    try:
        r0 = randint(10, 20)
        r1 = randint(1, 9)
        r2 = randint(1000, 9999)
        url = "https://arxiv.org/pdf/" + str(r0) + "0" + str(r1) + ".0" + str(r2) + ".pdf"
        response = requests.get(url, stream=True)
        with open(str(r0) + '0' + str(r1) + '.0' + str(r2) + '.pdf', 'wb') as out_file:
            shutil.copyfileobj(response.raw, out_file)
        del response
    except:
        time.sleep(5) # Prevent ratelimiting