command-line RPN calculator
rpnChilada is a command-line Reverse-Polish Notation calculator that was first written in C in 1988 as a four-function calculator.
It was rewritten in Python 3 in 2012 and now uses the mpmath library. It was a Python learning exercise for me, and a fun little toy, but when I found mpmath, it became really cool and powerful, so props to Fredrik Johansson, who did most of the heavy lifting (http://mpmath.org).
rpnChilada gives you the whole enchilada when it comes to playing with numbers. You get math functions, algebra functions, combinatoric functions, number theory functions, astronomy functions, physics functions, unit conversions (comparable to GNU Units) and much, much more. rpnChilada supports lists, but not matrices.
rpnChilada comes with integrated help, which isn’t complete, but has at least a basic description of every function, and over 1200 built-in examples.
rpnChilada also comes with an extensive test suite, which is being constantly improved. Many of the functions are validated against the OEIS.
Version 7 has been in the works for more than two and a half years, and the number of operators since version 6.4 has increased by at least 200. It also supports user-defined persistent variables and functions. rpnChilada also caches lookups and certain calculations.
There are still bugs, and since it’s a one-person side project, progress is slow, but bug reports and feature requests are welcome at email@example.com.
Note, Windows users will want the Windows-specific wheels for pyephem and gmpy2:
rpnChilada can be launched with ‘rpnChilada’ or ‘rpn’ in the Python Scripts/ directory.
For a quick primer on rpnChilada’s use, try “rpn help examples”. Please note that the OEIS integration and geographic location functions require Internet access.