python palywright库基本使用

开源方：微软

安装：pip install playwright；python -m playwright install

特点：自动化脚本录制；有同步、异步api

生成代码指令：python -m playwright codegen
其他：需要python 3.7及以上；官方api为node版本，python版本待补充

同步：关键字为：sync_playwright

from time import sleep
from playwright import sync_playwright
with sync_playwright() as p:
  for browser_type in [p.chromium, p.firefox, p.webkit]:
    browser = browser_type.launch(headless=false) # 默认无头，这样为有头模式
    page = browser.newpage()
    page.goto('http://baidu.com')
    page.fill("input[name=\"wd\"]", "airpython")
    with page.expect_navigation():
      page.press("input[name=\"wd\"]", "enter")
    page.waitforselector("text=百度热榜")
    page.screenshot(path=f'example-{browser_type.name}.png')
    sleep(5)
    browser.close()

异步：关键字为：async_playwright

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(headless=false)
      page = await browser.newpage()
      await page.goto('http://baidu.com')
      await page.fill("input[name=\"wd\"]", "airpython")
      await page.press("input[name=\"wd\"]", "enter")
      await page.waitforselector("text=百度热榜")
      await page.screenshot(path=f'example-{browser_type.name}.png')
      await browser.close()
asyncio.get_event_loop().run_until_complete(main())

集成 pytest 测试

@pytest.fixture(scope="session")
def test_playwright_is_visible_on_google(page):
  page.goto("https://www.google.com")
  page.type("input[name=q]", "playwright github")
  page.click("input[type=submit]")
  page.waitforselector("text=microsoft/playwright")

执行 js 代码

from playwright import sync_playwright
with sync_playwright() as p:
  browser = p.firefox.launch()
  page = browser.newpage()
  page.goto('https://www.example.com/')
  dimensions = page.evaluate('''() => {
  return {
      width: document.documentelement.clientwidth,
      height: document.documentelement.clientheight,
      devicescalefactor: window.devicepixelratio
      }  }''')
  print(dimensions)
  browser.close()

中断网络请求

from playwright import sync_playwright
with sync_playwright() as p:
  browser = p.chromium.launch()
  page = browser.newpage()

def log_and_continue_request(route, request):
  print(request.url)
  route.continue_()

记录并继续所有网络请求

page.route('**', lambda route, request: log_and_continue_request(route, request))
page.goto('http://todomvc.com')
browser.close()

以上就是python palywright库基本使用的详细内容，更多关于python palywright库的资料请关注其它相关文章！