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I have two solutions for this problem. The first is a mundane one, and 
what I employed in our production environment:
class RecvAdapter(object):
 def __init__(self, wrapped):
 self.wrapped = wrapped
 def recv(self, amt):
 return self.wrapped.read(amt)
 def close(self):
 self.wrapped.close()
...
 fp = socket._fileobject(RecvAdapter(r), close=True)
The second solution is a bit more interesting. It involves applying 
what I call a weakmethod: A bound method that holds a weak ref to the 
object instance:
import weakref
class WeakMethod(object):
 def __init__(self, bound):
 self.weakself = weakref.proxy(bound.im_self)
 self.methodname = bound.im_func.func_name
 def __call__(self, *args, **kw):
 return getattr(self.weakself, self.methodname)(*args, **kw)
We then do:
 r.recv = WeakMethod(r.read)
 fp = socket._fileobject(r, close=True)
I've had many uses for a WeakMethod through the years. I wonder if such 
a class might be considered useful enough to be put into the weakref 
module.