基本使用
html_doc = """ <html><head><title>The Dormouse's story</title></head> <body> <p class="sister"><b></b></p> <p class="story" id="p">Once upon a time there were three little sisters; and their names were <a href="/go.html?url=https://example.com/elsie" class="sister" >Elsie</a>, <a href="/go.html?url=https://example.com/lacie" class="sister" id="link2">Lacie</a> and <a href="/go.html?url=https://example.com/tillie" class="sister" id="link3">Tillie</a>; and they lived at the bottom of a well.</p> <p class="story">...</p> <html><head><title>The Do
阅读背景：
day_03 2
来源：互联网
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