The Official SymPy Blog: SymPy 0.6.6 released

SymPy 0.6.6 has been released on December 20, 2009. It is available at

http://sympy.org

The source distribution can be downloaded from:
http://sympy.googlecode.com/files/sympy-0.6.6.tar.gz

You can get the Windows installer here:
http://sympy.googlecode.com/files/sympy-0.6.6.win32.exe

And the html documentation here:
http://sympy.googlecode.com/files/sympy-0.6.6-docs-html.zip

About SymPy

SymPy is a Python library for symbolic mathematics. It aims to become a full-featured computer algebra system (CAS) while keeping the code as simple as possible in order to be comprehensible and easily extensible. SymPy is written entirely in Python.

Changes since last stable release

many documentation improvements, including docstrings and doctests
new assumptions system (GSoC) (See assumptions documentation for more information or have a look at Fabian's blog.)

Note: This is going to replace the old assumption system. It is encouraged to use it for new code, however it is not completely finished and parts of sympy have yet to be rewritten to use it; this scheduled for the 0.7 release.

improvements to test runner
printing improvements (especially LaTeX, but also mathml and pretty printing)
discriminant of polys
block diagonal methods for matrices
vast improvements to solving of ODEs (GSoC) (See ODE documentation for full details or Aaron's blog).
logcombine function
improvements to sets
better trigonometric simplification
improvements to piecewise functions
improvements to solve() and nsolve()
improvements to as_numer_denom()
much better quartic and cubic polynomial rootfinding
code refactoring and cleanup
physics: coupled clusters and wick expansion
matrices: symbolic QR solving
mpmath updated
pyglet updated
many, many bug fixes and small improvements

The following 22 people have contributed patches to this release (sorted alphabetically):

The following 10 people helped reviewing patches:

Monday, December 28, 2009