One solution to circular imports is to do one of the imports inside a function, rather than at the top level. David
On Thu, Jul 21, 2011 at 17:36, Eviatar <eviatarb...@gmail.com> wrote: > I can't see how to solve this. > > I import units, which import sage_eval, which imports symbolic, which > imports physical_constants; thus the circular import. How can this be > solved? The only way I can see is to merge the units and > physical_constants files, but they don't exactly go together. > > > On Jul 21, 2:17 am, Eviatar <eviatarb...@gmail.com> wrote: > > Oh, thanks, that helps. I guess I'll have to restructure the code. > > > > On Jul 21, 2:06 am, Burcin Erocal <bur...@erocal.org> wrote: > > > > > > > > > > > > > > > > > Hi, > > > > > On Thu, 21 Jul 2011 00:42:38 -0700 (PDT) > > > > > Eviatar <eviatarb...@gmail.com> wrote: > > > > I am working on a physical constants module, but for whatever reason > I > > > > can't get it to correctly import the units module. > > > > > > I import the units class using "from units import units", but I get: > > > > > > <snip> > > > > > > /home/eviatar/sage-4.7-linux-64bit-ubuntu_10.04.1_lts-x86_64-Linux/ > > > > local/lib/python2.6/site-packages/sage/symbolic/all.py in <module>() > > > > 12 from units import units > > > > 13 > > > > ---> 14 import physical_constants > > > > 15 > > > > 16 > > > > > > <snip backtrace> > > > > > > Is it a problem that physical_constants is imported in all.py along > > > > with the units module? Because when I run the file using %run, there > > > > is no error. I don't see what other way there is to do it though. > > > > > You introduce a circular import when you add the import statement for > > > physical constants to sage/symbolic/all.py. > > > > > The first part of the traceback looks exactly like the one from #11116. > > > I was just trying to clean up some of those dependencies. The patch > > > attached to that ticket doesn't solve the problem there, but it might > > > help you. > > > > >http://trac.sagemath.org/sage_trac/attachment/ticket/11116/trac_11116. > .. > > > > > Cheers, > > > Burcin > > -- > To post to this group, send an email to sage-devel@googlegroups.com > To unsubscribe from this group, send an email to > sage-devel+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/sage-devel > URL: http://www.sagemath.org > -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
