Посоветуйте источники (книги) о многопоточном программировании

#!/usr/bin/env python3
import socket
import subprocess
import sys
from datetime import datetime
import time
import _thread
t = time.time()
def scaner(ip):
    print ('start %s' % ip)
    for port in range(1,200):
 
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.settimeout(1)
        result = sock.connect_ex((ip, port))
        print (port,' ', ip)
        if result == 0:
            print ('Port %s on %s is open' % (port, ip) )
        sock.close()
_thread.start_new_thread(scaner, ('177.128.24.75',))
_thread.start_new_thread(scaner, ('186.95.102.38',))
_thread.start_new_thread(scaner, ('182.93.236.62',))
_thread.start_new_thread(scaner, ('193.200.183.154',))
_thread.start_new_thread(scaner, ('110.77.136.102',))
print(time.time()-t)
"""#scaner('177.128.24.75')
scaner('186.95.102.38')
scaner('182.93.236.62')
scaner('193.200.183.154')
scaner('110.77.136.102')"""
 
time.sleep(666666)