Throw error when trying to sympify `pystencils.Field` (e.g. using it in an...
Throw error when trying to sympify
pystencils.Field (e.g. using it in an Assignment without indexing)
This is a typical error when using pystencils: you forget the index and use a field directly in an Assignment.
Edit: apparently, this error is only triggered on recent versions of Sympy that can sympify using
__sympy__ (not on CI).