如何将读取的工作从文件划分为线程

Question

我有一个主机列表和端口列表。我想运行X线程，每次都会抓住一个主机并尝试连接到这些端口。我覆盖了连接部件，我的问题是如何进行线程。当我进行一些研究时，我在螺纹，多销术和异步方面感到非常困惑。最佳和/或简单库是什么？

现在我的伪代码没有线程代码是：

def getHosts():
    hosts = open("hostList.txt").read().splitlines()
    return hosts
def getPorts():
    ports = open("portList.txt").read().splitlines()
hosts = getHosts()
ports = getPorts()
for host in hosts
    for port in ports
        ---the connection code---

我认为我的总体想法是列出列表的长度，除以线程数，并创建一个将从thread_number*result_of_divide运行的线程，直到(thread_number 1(*result_of_divide。

Answer 1

threadpoolexecutor。

import concurrent.futures
MAX_THREAD_COUNT = 10

def read_text_file(filename):
    with open(filename, "r") as f:
        return f.read().splitlines()

def check_port(host, port):
    pass

hosts = read_text_file("hostList.txt")
ports = read_text_file("portList.txt")

with concurrent.futures.ThreadPoolExecutor(max_workers=MAX_THREAD_COUNT) as executor:
    results = {}
    for host in hosts:
        for port in ports:
            results[executor.submit(check_port, host, port)] = "{}:{}".format(host, port)
for result in concurrent.futures.as_completed(results):
    host_and_port = results[result]
    try:
        returned_data = result.result()
    except Exception as e:
        print(""{}" exception have been caused while checking {}".format(e, host_and_port))
    else:
        print("Checking of {} returned {}".format(host_and_port, returned_data))

P.S。代码可能不是100％正确的，我没有在"行动"中检查它。