pyrpn
Reverse Polish Notation calculator by python.
- Builtin operations:
-
+,-,*,/,sin,cos,tan,sqrt,pop,swap,sto
-
- Constants:
pi
- Other operations could be added (development)
- Shell script command:
pyrpn
Examples
- Use
pyrpnin Python (2.7, 3.5, 3.6) terminal:
>>> from pyrpn import Rpn
>>> Rpn('1 2 +').solve()
3.0
>>> Rpn('30 180 / pi * cos').solve()
0.8660254037844214
>>> Rpn('0.2 10.24 pi * 180 / * 10.24 pi * 180 / sin /').solve()
0.20106869612225164
>>> Rpn.solve_rpn('1 2 +')
3.0
>>> from pyrpn import solve_rpn
>>> solve_rpn('1 2 +')
3.0- Use
pyrpnin Linux terminal:
$ pyrpn
Welcome to RPN calculator, powered by Python.
pyrpn 1.0.4 -- Python package for reverse polish notation expression.
help --> Show usage message.
exit, quit --> Exit.
pyrpn shell > 2.0 sqrt
pyrpn shell > 1.4142135623730951
pyrpn shell > -1 sin sqrt
Input of sqrt must be a positive number.
Invalid RPN, fix it and try again.:)
pyrpn shell > 1 2 3 pop +
pyrpn shell > 3.0000000000000000
pyrpn shell > 1 2 + sto three pop three 2 *
pyrpn shell > 6.0000000000000000
