Python multiprocessor parser hangs?

Question

Python

Task: to parse the site, make each request from different ip, to speed up all this I use multiprocessing
By steps I
create a pool I create a mass of url-s I apply it to the parsing function However, it parses somewhere around a third of the urls, then it just thinks and that’s it . That is, my script does not end with code 1 or 0 What could be the reason?
pool = Pool(processes=5)
urls = [....]
results = pool.map(parse_func, urls )