今天执行一爬虫脚本时出现以下Warning:
C:hypy>python myblogSummary.py C:UsersufoAppDataLocalProgramsPythonPython37libsite-packagess4__init__.py:223: UserWarning: You provided Unicode markup but also provided a value for from_encoding. Your from_encoding will be ignored. warnings.warn("You provided Unicode markup but also provided a value for from_encoding. Your from_encoding will be ignored.")
出现以上告警原因是因为有了这一句:
soup= BeautifulSoup(html.text,'html.parser',from_encoding="utf-8");
解决方案:
将上一句修改成:
soup= BeautifulSoup(html.text,'html.parser');
原因:
python3 缺省的编码是unicode, 再在from_encoding设置为utf8就重复了, 会被忽视掉,故而运行程序出现告警(当然不理这个告警也可以)。
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