在python中并行运行两个进程

Question

我有两个过程：
1）收听网络套接字中的新消息
2）将新消息发布到特定的网址

我想并行运行它们。我应该使用什么？多处理，线程还是异步？

import requests
import websocket
import time

data = []

def receive_messages(url):
    ws = websocket.create_connection(url)
    while True:
        try:
            msg = ws.recv()
        except WebSocketConnectionClosedException:
            ws = websocket.create_connection(url)
            continue

        data.append(msg)

def send_messages(url):
    while True:
        try:
            msg = data.pop()
        except IndexError:
            time.sleep(1)
            continue

        requests.post(url, payload=msg)