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jZG dd dejZdS )zEvent loop using a proactor and related classes.
A proactor is a "notify-on-completion" multiplexer.  Currently a
proactor is only implemented on Windows with IOCP.
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dddZdd Zdd Zdd Z  ZS )_ProactorBasePipeTransportz*Base class for pipe and socket transports.Nc                s   t  j|| | j| || _|| _|| _d | _d | _d | _d| _	d| _
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