Hi, What is the status of the different ground types supported by sympy? "./bin/test -h" mentions three possible ground types: gmpy, python, and sympy. These seems to have been added in March 2010 (http://code.google.com/p/sympy/issues/detail?id=1598#c101). In Dec 2010, there is mention that the sympy ground type is no longer supported (http://code.google.com/p/sympy/issues/detail?id=1949#c11). Indeed, if I run the test suite with sympy ground types, I get many errors (mostly from polys, but also a couple files outside polys have errors). The errors aren't terribly difficult to fix, maybe more so for a "proper" fix, but the doctests are doomed to fail since sympy's Rational likes to cast itself into Integer whenever possible, whereas the other types are quite happy to print as e.g. 0/1, 1/1, 2/1, etc. What's the plan for sympy ground types? If we don't want to support them, I suggest to remove them completely.
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