进程思想，交替运行

import multiprocessing
import time


def one():
    for i in range(2):
        print("one")
        time.sleep(0.5)


def two():
    for i in range(2):
        print("two")
        time.sleep(0.5)


if __name__ == '__main__':
    one_process = multiprocessing.Process(target=one)
    two_process = multiprocessing.Process(target=two)
    # 3. 启动进程执行对应的任务
    one_process.start()
    two_process.start()