PyIMSL is a collection of Python wrappers to the math and statistical algorithms in the IMSL C Numerical Library[1]. I recall the days of digging in IMSL (International Mathematics and Statistics Library) user manuals and learning Fortran and C to use this vast library (Splus was to slow at that time). Upon knowing that Python is very favored among astronomers (click here to see the slog posts about Python) and that limits exist in Numerical Recipes (I didn’t check the latest version published last year, though), probably IMSL is useful for mathematical and statistical analysis for astronomers.

To know more, check these websites.
Press release about PyIMSL
Visual Numerics’ IMSL Numerical Libraries and
IMSL Libraries Technical Documentation (one can check what mathematical and statistical analysis tools are available from those documentations)

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