def search_UID(self, query, id, msg, lastIDs):
        """
        Returns C{True} if the message UID is in the range defined by the
        search query.

        @type query: A L{list} of L{bytes}
        @param query: A list representing the parsed form of the search
            query. Its first element should be a L{str} that can be interpreted
            as a sequence range, for example '2:4,5:*'.

        @type id: L{int}
        @param id: The sequence number of the message being checked.

        @type msg: Provider of L{imap4.IMessage}
        @param msg: The message being checked.

        @type lastIDs: L{tuple}
        @param lastIDs: A tuple of (last sequence id, last message id).
        The I{last sequence id} is an L{int} containing the highest sequence
        number of a message in the mailbox.  The I{last message id} is an
        L{int} containing the highest UID of a message in the mailbox.
        """
        (lastSequenceId, lastMessageId) = lastIDs
        c = query.pop(0)
        m = parseIdList(c, lastMessageId)
        return msg.getUID() in m

        Returns C{True} if the message UID is in the range defined by the
        search query.

        @type query: A L{list} of L{bytes}
        @param query: A list representing the parsed form of the search
            query. Its first element should be a L{str} that can be interpreted
            as a sequence range, for example '2:4,5:*'.

        @type id: L{int}
        @param id: The sequence number of the message being checked.

        @type msg: Provider of L{imap4.IMessage}
        @param msg: The message being checked.

        @type lastIDs: L{tuple}
        @param lastIDs: A tuple of (last sequence id, last message id).
        The I{last sequence id} is an L{int} containing the highest sequence
        number of a message in the mailbox.  The I{last message id} is an
        L{int} containing the highest UID of a message in the mailbox.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/mail/imap4.py