如何使用playwright-python处理多个页面？

问题描述

如何使用playwright-python收听新页面？

在JavaScript中，它将记录为：

const playwright = require("playwright");

(async () => {
  const browser = await playwright.chromium.launch();
  const context = await browser.newContext();
  const page = await context.newPage();
  context.on("page",async newPage => {
    console.log("newPage",await newPage.title())
  })

  // emulate some opening in a new tab or popup
  await page.evaluate(() => window.open('https://google.com','_blank'))
  // Keep in mind to have some blocking action there so that the browser won't be closed. In this case we are just waiting 2 seconds.
  await page.waitForTimeout(2000)
  await browser.close();
})();

成为Python

from playwright import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch(
        headless=False,executablePath='C:/Program Files/Google/Chrome/Application/chrome.exe'
    )
    context = browser.newContext()
    page = context.newPage()

'''
how to do in Python?
  context.on("page",'_blank'))
'''

    page.waitForTimeout(2000)
    browser.close()

解决方法

谢谢@hardkoded 解决方法如下：

from playwright import sync_playwright

def newPage(page):
   print("newPage() page title:",page.title())

with sync_playwright() as p:
    browser = p.chromium.launch(
        headless=False,executablePath='C:/Program Files/Google/Chrome/Application/chrome.exe'
    )
    context = browser.newContext()
    page = context.newPage()

    context.on("page",lambda page: newPage(page))

    page.evaluate('''() => {
        window.open('https://google.com','_blank')
    }''')
       
    page.waitForTimeout(2000)
    browser.close()

,

如果您需要在没有事件监听器的情况下处理新页面（即通过链接点击打开新标签页），您可以尝试以下代码：

    from playwright import sync_playwright

    with sync_playwright() as p:
        browser = p.chromium.launch()
        context = browser.newContext()
        page = context.newPage()
        page.goto('<site url>')
        with context.expect_page() as tab:
            page.click('.newTabByLink')
        # do some steps
        ...
        tab.close()
        
        browser.close()