打开python 3 urllib的调试输出 [英] Turning on debug output for python 3 urllib

问题描述

在python 2中，可以通过执行

In python 2, it was possible to get debug output from urllib by doing

import httplib
import urllib
httplib.HTTPConnection.debuglevel = 1
response = urllib.urlopen('http://example.com').read()

但是，在python 3中，它看起来已经被移动到

However, in python 3 it looks like this has been moved to

http.client.HTTPConnection.set_debuglevel(level)

但是，我使用urllib不是http。客户端直接如何设置它，以便我的http请求以这种方式显示调试信息？

However, I'm using urllib not http.client directly. How can I set it up so that my http request display debugging information in this way?

这是我使用到目前为止，最好的方法是继续，如果我想要获得调试信息？

Here's what I"m using so far. What's the best way to proceed if I want to be able to get debug information?

#Request Login page
cookiejar = http.cookiejar.CookieJar()
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cookiejar))
request = urllib.request.Request(options.uri)
add_std_headers(request)
response = opener.open(request)
response_string = response.read().decode("utf8")
# ...

推荐答案

你是第一次正确，你可以简单地添加行 http.client.HTTPConnection.debuglevel = 1 在您的文件开始时启用HTTP调试应用程序范围。 urllib.request 仍然使用 http.client 。

You were right the first time. You can simply add the line http.client.HTTPConnection.debuglevel = 1 at the start of your file to turn on HTTP debugging application-wide. urllib.request still uses http.client.

似乎还有一种方法来为单个处理程序设置调试级别（由cre at $ urllib.request.HTTPHandler（debuglevel = 1）并构建一个开启者），但是在我的Python3（3.0b3）安装中，实际上并没有实现。我想像在最近的版本中发生了变化！

It seems that there's also a way to set the debuglevel for a single handler (by creating urllib.request.HTTPHandler(debuglevel=1) and building an opener with that), but on my installation of Python3 (3.0b3) it's not actually implemented. I imagine that's changed in more recent versions!

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