python报错bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml.
qpython运行
原代码: soup = BeautifulSoup(r.text,'lxml')
报错:bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?
改成: soup = BeautifulSoup(r.text,'html.parser')
ok
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