如何从pubsub.schedule调用http函数

import requests
from pubsub import pubsub

# 订阅主题
def subscribe_to_topic():
    def callback(message):
        # 处理消息
        handle_message(message)
    
    pubsub.subscribe('my-topic', callback)

# 处理消息并调用 http 函数
def handle_message(message):
    data = message.data
    url = 'https://example.com/api'
    headers = {'Content-Type': 'application/json'}
    response = requests.post(url, json=data, headers=headers)
    
    if response.status_code == 200:
        print('Message processed successfully')
    else:
        print('Failed to process message')

# 发布消息
def publish_message(topic, data):
    pubsub.publish(topic, data)

# 示例调用
subscribe_to_topic()
publish_message('my-topic', {'key': 'value'})