如何让我的线程在Python中运行？

import threading

def my_thread_function():
    # 线程要执行的代码
    print("Hello, I'm running in a thread!")

# 创建线程对象
my_thread = threading.Thread(target=my_thread_function)

# 启动线程
my_thread.start()

import threading

class MyThread(threading.Thread):
    def run(self):
        # 线程要执行的代码
        print("Hello, I'm running in a thread!")

# 创建线程对象并启动
my_thread = MyThread()
my_thread.start()

import concurrent.futures

def my_thread_function():
    # 线程要执行的代码
    print("Hello, I'm running in a thread!")

# 创建线程池
with concurrent.futures.ThreadPoolExecutor() as executor:
    # 提交线程任务
    future = executor.submit(my_thread_function)

    # 等待线程任务完成
    result = future.result()