有没有办法让slackbot在它调用的任何频道上发帖

import requests

def post_message(channel_id, message):
    api_token = "YOUR_API_TOKEN"
    api_url = "https://slack.com/api/chat.postMessage"

    headers = {
        "Authorization": f"Bearer {api_token}",
        "Content-Type": "application/json"
    }

    data = {
        "channel": channel_id,
        "text": message
    }

    response = requests.post(api_url, headers=headers, json=data)
    if response.status_code == 200:
        print("Message posted successfully!")
    else:
        print("Failed to post message.")

# 调用示例
channel_id = "YOUR_CHANNEL_ID"
message = "Hello from Slackbot!"
post_message(channel_id, message)