在Python中运行多个线程，并在运行完成后关闭它们

import threading

def my_thread_func():
    # 线程的执行逻辑
    print("This is a thread.")

threads = []
for i in range(5):
    thread = threading.Thread(target=my_thread_func)
    threads.append(thread)
    thread.start()

for thread in threads:
    thread.join()

import threading

def my_thread_func():
    # 线程的执行逻辑
    print("This is a thread.")

    # 设置退出标志
    global running
    running = False

running = True

threads = []
for i in range(5):
    thread = threading.Thread(target=my_thread_func)
    threads.append(thread)
    thread.start()

# 等待所有线程运行完成
for thread in threads:
    thread.join()

# 关闭线程
running = False