Sync_playwright（）。start（）似乎已悬挂

Question

我写的简单代码：

from playwright.sync_api import sync_playwright
print('debug1')

p = sync_playwright().start()
print('debug2')
browser = p.firefox.launch(headless=False)
print('debug3')
page = browser.new_page()
page.goto("http://whatsmyuseragent.org/")
page.screenshot(path="example.png")
browser.close()

我得到的输出：

debug1

我是使用剧作家库的完整菜鸟，并且该程序只是挂在'sync_playwright（）。start（）'零件上。我已经尝试从Internet运行其他示例脚本，所有这些脚本都在这一行上冻结了。另外，我尝试使用更改浏览器并使用无头模式，所有这些模式都无法使用。

Answer 1

您应该使用 sync_playwright 用作：

from playwright.sync_api import sync_playwright
print('debug1')

with sync_playwright() as p:
    print('debug2')
    browser = p.firefox.launch(headless=False)
    print('debug3')
    page = browser.new_page()
    page.goto("http://whatsmyuseragent.org/")
    page.screenshot(path="example.png")
    browser.close()

输出

debug1
debug2
debug3

请参阅Python

编辑（特定于op）

作为最后的沟渠工作，请尝试以下步骤：

1. 运行 pip install -u pip
2. run pip卸载plawyright
3. 运行 pip缓存删除playwright
4. 运行 pip install playwright

请记住，如果您安装了多个版本的Python，请使用为PIP定义的PATH变量，用于Python 您想要安装剧作家。最后，尝试更改与剧作家一起使用的浏览器。因此，代替浏览器= p.firefox.launch（headless = false），使用 browser = p.chromium.launch（headless = false）>

Answer 2

也可以使用async_playwright尝试相同的方法：

import asyncio
from playwright.async_api import async_playwright
import time


# async def handle_dialog(dialog):
#     if dialog.message == 'You will be redirected to employer Login Portal.':
#       await dialog.dismiss()

async def main():
  # Create a browser instance.
  async with async_playwright() as playwright:
    browser = await playwright.firefox.launch(headless=False)
    #https://playwright.dev/docs/downloads
    context = await browser.new_context()
    # chromium_context = playwright.chromium.cast(context)
    # await chromium_context.set_browser_context_option("downloads", False)


    # Create a new page.
    page = await context.new_page()

    # Navigate to the specified URL.
    await page.goto('https://www.google.com/') 

    #https://stackoverflow.com/questions/72493916/closing-a-confirm-popup-with- 
    playwright-in-python/72513920#72513920
    page.on("dialog", lambda dialog: dialog.dismiss())
    # Wait for the page to load.
    await page.wait_for_load_state('networkidle', timeout=10000) # 10 secs 

    # Click on the "Sign In" button. 
    await page.wait_for_selector('css=#modal-content > span')
    mod =  page.locator('css=#modal-content > span')
    await mod.click()

    await page.wait_for_selector('css=body > div._bodyMID.pdGridM > div > 
    div.col-md-9.col-sm-8._action4Mob.homesearch > div.service-listnew > ul > 
    li.service1.single-ser > a')
    employerlogin =  page.locator('css=body > div._bodyMID.pdGridM > div > 
    div.col-md-9.col-sm-8._action4Mob.homesearch > div.service-listnew > ul > 
    li.service1.single-ser > a')
    await employerlogin.click()

   
    time.sleep(30)

    #await page.close()
    # close the context
    #await context.close()

    # Close the browser.
    #await browser.close()


 asyncio.run(main()) # one time callable

Answer 3

我遇到了这个问题，它是通过重新安装和升级PIP来解决的。我不知道为什么。