Python code module containing financial calculation functions for industrial cost analysis.

Arithmetic practice program for 5-7 year olds.

Python code module for fixed point decimal calculations.

Python code module to perform fourier transformations in python.

Python code module enhancing the calculation and presentation of fractional calculations.

Return list of the n n'th roots of a complex number.

Statistical functions. [Open Source/GPL]

Provides multiprecision arithmetic functionality to Python programmers. [Open Source, LGPL]

Cross platform calculator. Able to use paranthesis and can cope with very larger numbers.[OpenSource/GPL]

Python package for numerical computation and plotting with a MatLab-like interface.

Collection of FORTRAN routines interfaced with NumPy. Provides interactive data analysis environment comparative to MATLAB, Octave, Scilab, etc. built on Python.

Numerical Python adds a fast, compact multidimensional array language facility to Python. [Open Source, Python license]

NURBS allgorithms in use for naval architechture.

A Python interface to the C++ library GiNaC (an open framework for symbolic computation within the C++ programming language). [Open Source, LGPL]

A Python interface for the GNU scientific library. [Open Source, GPL/LGPL]

Dates and date calculations without excess baggage (time zones, daylight savings, leap seconds, etc.).

A free/open-source library for quantitative finance. [Open Source, BSD-like]

Python interface to the R system for statistical computing and graphics. [Open Source, BSD-like]

A collection of Python modules that are useful for scientific computing. [Open Source, LGPL]

Open Source Library of Scientific Tools. SciPy supplements the popular Numeric module, gathering a variety of high level science and engineering modules together as a single package. Within SciPy are modules for graphics and plotting, optimization, integration, special functions, signal and image processing, genetic algorithms, ODE solvers, and others. [Open Source, BSD-like]