Jupyter NoteBook的运行

使from playwright.sync_api import sync_playwright在 Jupyter NoteBook 中运行时，直接运行以下代码会报错：

from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch()
    page = browser.new_page()
    page.goto("http://www.baidu.com")
    page.screenshot(path="./example.png")
    browser.close()

错误信息：

---------------------------------------------------------------------------
Error                                     Traceback (most recent call last)
Cell In[1], line 4
      1 """QuickStart"""
      2 from playwright.sync_api import sync_playwright
----> 4 with sync_playwright() as p:
      5     browser = p.chromium.launch()
      6     page = browser.new_page()

File f:\env\miniconda3\envs\python12\Lib\site-packages\playwright\sync_api\_context_manager.py:47, in PlaywrightContextManager.__enter__(self)
     45             self._own_loop = True
     46         if self._loop.is_running():
---> 47             raise Error(
     48                 """It looks like you are using Playwright Sync API inside the asyncio loop.
     49 Please use the Async API instead."""
     50             )
     52         # Create a new fiber for the protocol dispatcher. It will be pumping events
     53         # until the end of times. We will pass control to that fiber every time we
     54         # block while waiting for a response.
     55         def greenlet_main() -> None:

Error: It looks like you are using Playwright Sync API inside the asyncio loop.
Please use the Async API instead.

这是因为 Jupyter Notebook 本身运行在一个 asyncio 事件循环 中，这导致了与 Playwright 同步 API 的冲突

解决办法：

将这份代码保存为.py文件