我正在运行@ Dan-Dev在他的答案中提供的代码。
from requests_html import HTMLSession
url = 'https://www.thefreedictionary.com/love'
session = HTMLSession()
r = session.get(url)
r.html.render()
lang_bar = r.html.find('#LangBar', first=True)
print(lang_bar.html)
结果是
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call last)
<ipython-input-2-ec1d9137b197> in <module>
8
9 resp = session.get(url, headers = headers)
---> 10 resp.html.render()
11
12 soup = bs(resp.html.html, "lxml")
C:\Anaconda3\lib\site-packages\requests_html.py in render(self, retries, script, wait, scrolldown, sleep, reload, timeout, keep_page)
584 """
585
--> 586 self.browser = self.session.browser # Automatically create a event loop and browser
587 content = None
588
C:\Anaconda3\lib\site-packages\requests_html.py in browser(self)
727 self.loop = asyncio.get_event_loop()
728 if self.loop.is_running():
--> 729 raise RuntimeError("Cannot use HTMLSession within an existing event loop. Use AsyncHTMLSession instead.")
730 self._browser = self.loop.run_until_complete(super().browser)
731 return self._browser
RuntimeError: Cannot use HTMLSession within an existing event loop. Use AsyncHTMLSession instead.
显然，该代码在Dan-Dev的计算机上运行良好。您能否解释为什么我的笔记本电脑返回错误Cannot use HTMLSession within an existing event loop. Use AsyncHTMLSession instead？
您可以尝试以下方法：
import nest_asyncio
nest_asyncio.apply()
session = HTMLSession()
r = session.get(url_template.format(url))
html_str = r.text
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