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Pymbolic is a small expression tree and symbolic manipulation library. Two things set it apart from other libraries of its kind:
Pymbolic currently understands regular arithmetic expressions, derivatives, sparse polynomials, fractions, term substitution, expansion. It automatically performs constant folding, and it can compile its expressions into Python bytecode for fast(er) execution.
If you are looking for a full-blown Computer Algebra System, look at
sympy <http://pypi.python.org/pypi/sympy>
or
PyGinac <http://pyginac.sourceforge.net/>
. If you are looking for a
basic, small and extensible set of symbolic operations, pymbolic may
well be for you.
Resources:
documentation <http://documen.tician.de/pymbolic>
_download <http://pypi.python.org/pypi/pymbolic>
_ (via the package index)source code via git <http://github.com/inducer/pymbolic>
_ (also bug tracker)