don't assign allow_interrupt.__doc__
don't assign allow_interrupt.__doc__

set it in class definition,
because assignment isn't allowed on py2

dash-dash/pyzmq,yyt030/pyzmq,yyt030/pyzmq,ArvinPan/pyzmq,yyt030/pyzmq,Mustard-Systems-Ltd/pyzmq,dash-dash/pyzmq,dash-dash/pyzmq,ArvinPan/pyzmq,swn1/pyzmq,caidongyun/pyzmq,Mustard-Systems-Ltd/pyzmq,Mustard-Systems-Ltd/pyzmq,swn1/pyzmq,caidongyun/pyzmq,swn1/pyzmq,ArvinPan/pyzmq,caidongyun/pyzmq