poplib.py 文件源码

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

    #__del__ = quit


    # optional commands: