Python 从URLOpen获取JSON

我无法始终从给定的url获取JSON。它只在大约60%的时间内有效

jsonurl = urlopen('http://www.reddit.com/r/funny/hot.json?limit=16')
r_content = json.load(jsonurl)['data']['children']

程序有时在第二行崩溃，因为url中的信息由于某种原因无法正确检索

通过一些调试，我发现我从第一行得到了以下错误：

<addinfourl at 4321460952 whose fp = <socket._fileobject object at 0x10185b050>>

---

此错误大约有40%的时间发生，其他60%的时间发生，代码工作正常。我做错了什么？如何使url打开更加一致？

客户端通常不存在问题。您的代码在行为上是一致的，但服务器响应可能会有所不同

我运行了几次您的代码，但确实出现了一些问题：

>>> jsonurl = urlopen('http://www.reddit.com/r/funny/hot.json?limit=16')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 126, in urlopen
    return _opener.open(url, data, timeout)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 406, in open
    response = meth(req, response)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 519, in http_response
    'http', request, response, code, msg, hdrs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 444, in error
    return self._call_chain(*args)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 378, in _call_chain
    result = func(*args)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 527, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 429: Unknown

您必须查找以下内容：：

>>> jsonurl.getcode()
200
>>> 

只有当它达到200时，您才应该处理从请求中获得的数据

>>> jsonurl.getcode()
200
>>>