Python advice needed to survive check-code

Jim Hague jim.hague at
Wed Jan 11 04:25:20 CST 2012

Help! Advice needed by a Mercurial & Python non-guru.

I've got a patch for the Bugzilla extension lined up, fixing the omission of 
http support for the XML-RPC Bugzilla interaction modes.

As part of that, I need modified xmlrpclib Transport and SafeTransport classes 
that remember and return cookies, specifically the Bugzilla login cookie. So, I 
need to add a cookie store, cookie sending and replace the request() method. I 
could subclass both, but don't want to repeat the same code.

My solution so far is thus:

class cookietransportrequest:
    cookies = []
    def send_cookies(self, connection):
	# Add cookies to outbound headers.

    def request(self, host, handler, request_body, verbose=0):
        # Request that parses cookies and sends them in outbound headers.

class cookietransport(cookietransportrequest, xmlrpclib.Transport):

class cookiesafetransport(cookietransportrequest, xmlrpclib.SafeTransport):

The problem is that for this to work cookietransportrequest has to be an old-
style class to match xmlrpclib.(Safe|)Transport, or __init__s don't get called 
properly. But then I fall foul of, and I don't see a way to turn 
off the check for just that class def, only the entire file, which seems 
overkill. Alternatively, I can make it work with a new-style 
cookietransportrequest by explicitly calling the Transport __init__s, but that 
seems somehow a bit ugly.

I'm unsure how to proceed. Any suggestions?
Jim Hague - jim.hague at          Never trust a computer you can't lift.

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