()
Get the hardware address as a 48-bit positive integer.

    The first time this runs, it may launch a separate program, which could
    be quite slow.  If all attempts to obtain the hardware address fail, we
    choose a random 48-bit number with its eighth bit set to 1 as recommended
    in RFC 4122.
Get the hardware address as a 48-bit positive integer.
Get the hardware address as a 48 - bit positive integer .
def getnode():
    """Get the hardware address as a 48-bit positive integer.

    The first time this runs, it may launch a separate program, which could
    be quite slow.  If all attempts to obtain the hardware address fail, we
    choose a random 48-bit number with its eighth bit set to 1 as recommended
    in RFC 4122.
    """
    global _node
    if _node is not None:
        return _node

    for getter in _GETTERS + [_random_getnode]:
        try:
            _node = getter()
        except:
            continue
        if (_node is not None) and (0 <= _node < (1 << 48)):
            return _node
    assert False, '_random_getnode() returned invalid value: {}'.format(_node)
def getnode ( ) : global _node if _node is not None : return _node for getter in _GETTERS + [ _random_getnode ] : try : _node = getter ( ) except : continue if ( _node is not None ) and ( 0 <= _node < ( 1 << 48 ) ) : return _node assert False , '_random_getnode() returned invalid value: {}' . format ( _node )