python playwright执行测试用例方法

可以通过以下步骤执行测试用例：

1. 导入必要的Python库和Playwright库：

import asyncio
from playwright.sync_api import Playwright, sync_playwright

2. 实例化Playwright：

with sync_playwright() as playwright:
    # Your code for test cases execution goes here...

3. 创建并开启一个新的浏览器实例：

browser = playwright.chromium.launch()
page = browser.new_page()

4. 进行测试用例的操作并获取结果：

page.goto('https://www.example.com')
title = page.title()

5. 关闭浏览器实例：

browser.close()

通过以上步骤，就可以使用Python和Playwright执行测试用例了。当然，具体的测试用例需要根据项目的具体需求进行编写。