如何使用win32 api和pyautogui自动化web whatsapp来发送消息？

pip install pywin32 pyautogui

import win32api
import win32con
import pyautogui
import time

def open_web_whatsapp():
    win32api.ShellExecute(0, "open", "https://web.whatsapp.com", None, None, win32con.SW_SHOWNORMAL)
    time.sleep(10)  # 等待10秒以确保页面加载完成

def get_chat_box_position():
    chat_box_location = pyautogui.locateOnScreen('chat_box.png', confidence=0.9)
    if chat_box_location is None:
        return None
    else:
        chat_box_position = pyautogui.center(chat_box_location)
        return chat_box_position

def send_message(message):
    chat_box_position = get_chat_box_position()
    if chat_box_position is None:
        return False
    else:
        pyautogui.moveTo(chat_box_position, duration=1)
        pyautogui.click()
        pyautogui.typewrite(message)
        pyautogui.typewrite(['enter'])
        return True

open_web_whatsapp()
send_message("Hello, World!")