如何将slackbot编程为每周自动发送一条常规消息

import requests
import json
import datetime

def send_weekly_message(token, channel, message):
    url = "https://slack.com/api/chat.postMessage"
    headers = {
        "Authorization": "Bearer " + token,
        "Content-Type": "application/json"
    }
    data = {
        "channel": channel,
        "text": message
    }
    response = requests.post(url, headers=headers, data=json.dumps(data))
    if response.status_code == 200:
        print("Message sent successfully!")
    else:
        print("Failed to send message. Error:", response.text)

# 设置Slack API令牌和目标频道
slack_token = "your_slack_api_token"
slack_channel = "your_slack_channel"

# 设置每周发送的消息内容
weekly_message = "这是每周的常规消息。"

# 获取当前日期和时间
now = datetime.datetime.now()

# 每周一发送消息
if now.weekday() == 0:
    send_weekly_message(slack_token, slack_channel, weekly_message)