尝鲜~ 微软又出现好玩的了，Python 录制自动化操作，自动生成代码

自动化

==Splinter 是对 selenium的抽象，更高级用法==

# 安装playwright库
pip install playwright

# 安装浏览器驱动文件（安装过程稍微有点慢）
python -m playwright install

# 命令行键入 --help 可看到所有选项
python -m playwright codegen

-o：将录制的脚本保存到一个文件

--target：规定生成脚本的语言，有JS和Python两种，默认为Python

-b：指定浏览器驱动

playwright demo

python -m playwright codegen --target python -o 'my.py' -b chromium www.baidu.com

同步依次打开三个浏览器，前往baidu搜索，截图后退出。

from playwright import sync_playwright

with sync_playwright() as p:
    for browser_type in [p.chromium, p.firefox, p.webkit]:
        browser = browser_type.launch()
        page = browser.newPage()
        page.goto('https://baidu.com/')
        page.screenshot(path=f'example-{browser_type.name}.png')
        browser.close()

异步异步操作可结合asyncio同时进行三个浏览器操作。

import asyncio
from playwright import async_playwright

async def main():
    async with async_playwright() as p:
        for browser_type in [p.chromium, p.firefox, p.webkit]:
            browser = await browser_type.launch()
            page = await browser.newPage()
            await page.goto('http://baidu.com/')
            await page.screenshot(path=f'example-{browser_type.name}.png')
            await browser.close()

asyncio.get_event_loop().run_until_complete(main())

移动端更厉害的是，playwright还可支持移动端的浏览器模拟。下面是官方文档提供的一段代码，模拟在给定地理位置上手机iphone 11 pro上的Safari浏览器，首先导航到maps.google.com，然后执行定位并截图。

from playwright import sync_playwright

with sync_playwright() as p:
    iphone_11 = p.devices['iPhone 11 Pro']
    browser = p.webkit.launch(headless=False)
    context = browser.newContext(
        **iphone_11,
        locale='en-US',
        geolocation={ 'longitude': 12.492507, 'latitude': 41.889938 },
        permissions=['geolocation']
    )
    page = context.newPage()
    page.goto('https://maps.google.com')
    page.click('text="Your location"')
    page.screenshot(path='colosseum-iphone.png')
    browser.close()