Python 3.x 如何在python中使用Beautifulsoup从标记中提取值？

我有以下标签：

</div><input autocomplete="off" id="j_id1:javax.faces.ViewState:0" name="javax.faces.ViewState" type="hidden" value="qhaB3+BPc7RCn9OJu7uc3ljgv5tl0
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我想从中提取值，我试图使用find，但无法获得它。

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有人能帮忙吗？

要访问属性

value=…

，可以使用

element['value']

或

element.get（'value'）

例如：

from bs4 import BeautifulSoup


txt = '''<input autocomplete="off" id="j_id1:javax.faces.ViewState:0" name="javax.faces.ViewState" type="hidden" value="qhaB3+BPc7RCn9OJu7uc3ljgv5tl0
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soup = BeautifulSoup(txt, 'html.parser')

print(soup.select_one('input[id="j_id1:javax.faces.ViewState:0"]')['value'])

或：

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您尝试使用的代码在哪里？预期的输出是什么？我想提取视图状态值

qhaB3+BPc7RCn9OJu7uc3ljgv5tl0
virgu+E+kY0cpPjkXntWS6mR27AlJl9lRssNJtCiibknNxLXHzipBdzSrg0Bc9jmqJZGR/UpQMr4QvE0Y1eESruoQ/JZ1IZWkW3KL3px7sG509UnLCC52y/bzhYOjwY+mCh/o0LVa9Tn7c0PC/
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print(soup.find('input', id="j_id1:javax.faces.ViewState:0").get('value'))