Tommy and Christopher, thanks for the ideas, I think I'll give ObjectToken a whirl first.
Rick Tommy Stropp wrote: > Hi Rick > > If you're just passing from one python actor to another, you should be > able to just pass it as an object. Just import ObjectToken: > from ptolemy.data import ObjectToken > then send your tuple through the port as an ObjectToken and make sure > you set the port type to object. > In the receiving python actor, using the getValue() method will get > you your tuple back. > > - Tommy > > > > > > Date: Thu, 9 Jul 2009 09:55:57 -0700 > > From: cxh at eecs.berkeley.edu > > To: rem63 at cornell.edu > > CC: kepler-users at kepler-project.org > > Subject: Re: [kepler-users] help with Python Actors > > > > Hi Rick, > > I'm not familiar with Python or Python tuples. > > http://diveintopython.org/getting_to_know_python/tuples.html > > says "A tuple is an immutable list. A tuple can not be changed > > in any way once it is created." > > > > You could try setting the type of the port to object, but > > this might require hacking around with the Python actor code. > > > > It could be that there is a need for a PythonTuple type, which is > > not that difficult to add if there is no need to convert from > > other types to PythonTuple. > > > > --start-- > > 5.3 How do I add a type? > > The Ptolemy Type system is covered in a chapter in "Volume 2: > > Ptolemy II Software Architecture," which can be found via > > http://ptolemy.eecs.berkeley.edu/ptolemyII/designdoc.htm > > > > The Ptolemy Type system has a type lattice that is implemented > > in classes in ptolemy.data.type. A common misconception is > > that to add a type, one needs to add the new type to the type > > lattice by editing ptolemy.data.type.BaseType. > > However, you need only add a type to the type lattice if you want > > to automatically convert your type to preexisting types (other > > than UNKNOWN and GENERAL). If you have a type class, then the type > > system will check types for you. For examples, see > > $PTII/ptolemy/data/type/test/TestToken.java and > > $PTII/ptolemy/actor/lib/Security/KeyToken.java. > > --end-- > > > > The advantage of adding a PythonTupleToken over using an ObjectToken is > > that with a PythonTupleToken, you can be sure that two actors are > sharing > > the right data type instead of just a random Object. > > > > _Christopher > > > > Rick Moore wrote: > > > I'm trying to use multiple Python Actors in a data validation > workflow. > > > What I need to do is pass a Python tuple from one Python Actor to the > > > next, but I can't figure out how to configure the ports to allow > it. So > > > far have tried setting the type to General and Unknown and also > leaving > > > the type blank. > > > > > > I'm new at this, so any help would be greatly appreciated. > > > > > > Rick Moore > > > Information Science > > > Cornell University > > > _______________________________________________ > > > Kepler-users mailing list > > > Kepler-users at kepler-project.org > > > http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users > > > > -- > > Christopher Brooks (cxh at eecs berkeley edu) University of California > > CHESS Executive Director US Mail: 337 Cory Hall > > Programmer/Analyst CHESS/Ptolemy/Trust Berkeley, CA 94720-1774 > > ph: 510.643.9841 fax:510.642.2718 (Office: 545Q Cory) > > home: (F-Tu) 707.665.0131 (W-F) 510.655.5480 > > _______________________________________________ > > Kepler-users mailing list > > Kepler-users at kepler-project.org > > http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users > > ------------------------------------------------------------------------ > Windows Live helps you keep up with all your friends, in one place. > <http://go.microsoft.com/?linkid=9660824> -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mercury.nceas.ucsb.edu/kepler/pipermail/kepler-users/attachments/20090709/81ff9394/attachment.html>
