Python urllib3 urlopen 在特定错误下不重试
为什么从 urllib3 里的 urlopen 在遇到 ReadTimeoutError 时不进行重试呢？我是不是漏掉了什么？我可以通过自己写重试代码来解决这个问题，但我更希望能用模块里的重试功能。
我甚至尝试过在 HTTPSConnectionPool.request() 中明确设置 retries=3 作为参数，但这也没有帮助……
这是我的代码：
conn = urllib3.HTTPConnectionPool(host, port=port)
return conn.request(method, api_url, data, retries=3,
timeout=urllib3.Timeout(connect=2, read=3))
谢谢！
补充：
现在，有一些调试信息的响应（这是来自 openERP 的日志）：
2014-06-18 08:36:42,791 5585 DEBUG test
openerp.addons.myaddon.xml_request.xml_request: args prepared
2014-06-18 08:36:42,791 DEBUG Added an stderr logging handler to logger:
urllib3
2014-06-18 08:36:42,791 5585 DEBUG test urllib3: Added an stderr logging
handler to logger: urllib3
2014-06-18 08:36:42,792 INFO Starting new HTTPS connection (1):
some.host.com
2014-06-18 08:36:42,792 5585 INFO test urllib3.connectionpool: Starting new
HTTPS connection (1): some.host.com
2014-06-18 08:36:43,699 DEBUG Setting read timeout to 10
2014-06-18 08:36:43,699 5585 DEBUG test urllib3.connectionpool: Setting read
timeout to 10
2014-06-18 08:36:53,722 5585 ERROR test openerp.osv.osv: Uncaught exception
Traceback (most recent call last):
File "/home/openerp/server/openerp/osv/osv.py", line 132, in wrapper
return f(self, dbname, *args, **kwargs)
File "/home/openerp/server/openerp/osv/osv.py", line 199, in execute
res = self.execute_cr(cr, uid, obj, method, *args, **kw)
File "/home/openerp/server/openerp/osv/osv.py", line 187, in execute_cr
return getattr(object, method)(cr, uid, *args, **kw)
File "/home/openerp/custom_addons/myaddon/xml_request/xml_request.py",
line 260, in button_test
self.request(cr, uid, ids[0], data, context=context)
File "/home/openerp/custom_addons/myaddon/xml_request/xml_request.py",
line 234, in request
config_rec.xml_port, 'POST', api_url, vals)
File "/home/openerp/custom_addons/myaddon/xml_request/xml_request.py",
line 208, in connAndReq
timeout=urllib3.Timeout(connect=5, read=10))
File "/usr/lib/python2.7/dist-packages/urllib3/request.py", line 79, in
request
**urlopen_kw)
File "/usr/lib/python2.7/dist-packages/urllib3/request.py", line 142, in
request_encode_body
**urlopen_kw)
File "/usr/lib/python2.7/dist-packages/urllib3/connectionpool.py", line
574, in urlopen
raise ReadTimeoutError(self, url, "Read timed out.")
ReadTimeoutError: HTTPSConnectionPool(host=u'some.host.com', port=443): Read
timed out.
正如你所看到的，ReadTimeoutError 是在超时时间到后抛出的，没有进行重试。