def __init__(self, chain, *args, **kwargs):
    'Initialize a chained control block.'
    if _debug:
        IOChain._debug('__init__ %r %r %r', chain, args, kwargs)
    IOCB.__init__(self, *args, **kwargs)
    IOChainMixIn.__init__(self, chain)
Initialize a chained control block.
def __init__(self, chain, *args, **kwargs):
    
    if _debug:
        IOChain._debug('__init__ %r %r %r', chain, args, kwargs)
    IOCB.__init__(self, *args, **kwargs)
    IOChainMixIn.__init__(self, chain)