25 lines
864 B
Markdown
25 lines
864 B
Markdown
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# URL lib 2–用户代理
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> 原文：<https://www.pythonforbeginners.com/code-snippets-source-code/python-modules-urllib2-user-agent>
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## 概观
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This post will show how to add headers to a HTTP request. By default urllib2 identifies itself as Python-urllib/2.7 : GET / HTTP/1.1″ 200 151 “-” “Python-urllib/2.7” That can sometimes be confusing for certain sites. With the user_agent header in Python, it’s possible to alter that and specify any identity you like. The example below, use the Mozilla 5.10 as a User Agent, and that is also what will show up in the web server log file.
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```py
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import urllib2
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req = urllib2.Request('http://192.168.1.2/')
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req.add_header('User-agent', 'Mozilla 5.10')
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res = urllib2.urlopen(req)
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html = res.read()
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```
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This is what will show up in the log file.
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```py
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"GET / HTTP/1.1" 200 151 "-" "Mozilla 5.10"
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```
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