(self)
return self.aio_process.pid
Process ID of child, or None if not started.
Process ID of child, or None if not started.
Process ID of child or None if not started .
def pid(self) -> Optional[int]:
        """Process ID of child, or None if not started."""
        return self.aio_process.pid
def pid ( self ) -> Optional [ int ] : return self . aio_process . pid