In trying to derive Geometry from Basic I ran into a pickling problem with `RegularPolygon(Point(1, 2), 4, 5, 0)`:
The directory of this object has `set(['_n', '_center', '_rot', '_radius'])` whereas the pickled object does not. (This was found by putting, in check, the line `set(d1) - set(d2)` just before the failing `d1==d2`. Can anyone help with this? The branch is in https://github.com/sympy/sympy/pull/955 . /c -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
