On Sat, Jun 2, 2012 at 8:53 PM, Aaron Meurer <[email protected]> wrote: > On Jun 2, 2012, at 9:02 AM, Sergiu Ivanov <[email protected]> wrote: > >> On Sat, Jun 2, 2012 at 2:11 PM, [email protected] >> <[email protected]> wrote: >>> >>> Both methods work, however for some reason the method used in the >>> quantum module is considered a bad design, that should be fixed. I do >>> not know why and I personally prefer what is done in the quantum >>> module, however I have not really thought about it. >> >> Hm, I see. Thank you for the information! > > Both methods exist because they are both needed. On the one hand, it > is essential for objects to be able to define how to print themselves, > or else no one would be able to use the printers for their own custom > SymPy objects outside of the library. On the other hand, it's a lot > easier to maintain the library printing code when it is all together > in printing/. That documentation page you linked to carefully > documents the specifics of this design.
Oh, I see, thank you for the explanation. Sorry for not having read the docs to the end :-( > I suppose the quantum module has its printing separate because the > physics module is somewhat separate from the rest if SymPy, i.e., it > isn't imported with import * and no other modules use code from it. I see, thank you. > IMHO it doesn't really matter if the physics printing code and tests > are in the printing module or in the physics module (though they > should probably both be in the same of the two). For category theory, > I think it has the potential to be useful outside itself, so I would > consider it to not really be separate like physics, and put the code > and tests in printing/. But the choice is yours. If the code for it > ends up being quite long, you might even consider putting it in its > own file (in the category module). I've chosen to keep the printing code in printing/ . The code is rather simple and short so far, so I guess that it fits quite nicely. Sergiu -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
