smichr/sympy — comment on commit 892ebad6377baacc522f4f3b1dff944db240e961
File:  line 0
By smichr:

Saptarshi, do you think we should just leave the number of nodes as an optional instantiation feature? And if so, should the check still be made that all nodes are present? Also, do you know if the tree can be discontinuous and what might be a good way to test whether it is or not? Anyway, thanks for looking this over. If I might request, could you check the next couple of commits, too?

Regarding the commit message: don't know what's going on there. vi doesn't show tabs and all looks good in the editor.