poplib.py 文件源码

def close(self):
        """Close the connection without assuming anything about it."""
        try:
            file = self.file
            self.file = None
            if file is not None:
                file.close()
        finally:
            sock = self.sock
            self.sock = None
            if sock is not None:
                try:
                    sock.shutdown(socket.SHUT_RDWR)
                except OSError as e:
                    # The server might already have closed the connection
                    if e.errno != errno.ENOTCONN:
                        raise
                finally:
                    sock.close()

    #__del__ = quit


    # optional commands: