简单的python线程池实现线程安全demo
from concurrent.futures import ThreadPoolExecutor import threading import time import sys sys.path.append(sys.path) test_list = [t for t in range(0,100)] # 定义一个准备作为线程任务的函数 index = 0 lock = threading.Lock() def action(thread_id): global index global test_list global lock while index<len(test_list): print(f'{thread_id}执行了!') try: # time.sleep(random.random()) #time.sleep(random.randint(0, 3)) lock.acquire() if index+1<len(test_list): index += 1 callback(index) else: print(f'{thread_id}任务完成了!') return except BaseException as e: print(e) finally: lock.release() def callback(index): print(test_list[index]) def start(): # 创建一个包含4条线程的线程池 with ThreadPoolExecutor(max_workers=4) as pool: # 使用线程执行map计算 # 后面元组有3个元素,因此程序启动3条线程来执行action函数 results = pool.map(action,(1,2,3,4)) print('--------------') if __name__ == '__main__': pass