[Patches] [ python-Patches-1750931 ] make build_opener raise exception when not passed a handler

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Patches item #1750931, was opened at 2007-07-10 04:14
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Category: Library (Lib)
Group: Python 2.6
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Robert Renaud (silentstrike)
Assigned to: Nobody/Anonymous (nobody)
Summary: make build_opener raise exception when not passed a handler

Initial Comment:
A bug bit me where I had code that looked like

urllib2.build_opener(func_returning_cookie_jar())

instead of

urllib2.build_opener(HTTPCookieProcessor(func_returning_cookie_jar())

the subsequent http request went through just fine, except it didn't send the cookie.  Nothing complained, except me, now.

Throwing the exception deeper in the code made the unittest fail, so I suspect the "silently ignore handlers which don't actually do any handling" behavior might be by design, but it seems terrible to me.

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